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Balance the equation KHC8H4O4 + BaOH = KBaC8H4O4 + H2O using the algebraic method or linear algebra with steps. KHC8H4O4 (aq) + NaOH (aq) KNaC8H4O4 (aq) + H2O (l) NaOH (aq) + KHP (aq) => Na+ + KP- + H2O (l) What is balanced chemical. The balanced equation of KHP with NaOH is what? Using an analytical balance, measure between 0.08 g and 0.1 g of potassium hydrogen phthalate (KHC8H4O4), abbreviated as KHP, into a clean 50 mL Erlenmeyer flask. The unbalanced chemical equation that describes this neutralization reaction looks like this CH3COOH(aq) +NaOH(aq) CH3COONa(aq) + H2O(l) Use substitution, Gaussian elimination, or a calculator to solve for each variable. While stiring the Experts are tested by Chegg as specialists in their subject area. Use uppercase for the first character in the element and lowercase for the second character. the KHP respectively in the balanced chemical equation. If exactly equivalent amounts of acid or base are used so that neither reactant is present in excess the solution is said to be at the of the operator. overall reaction follows: HC2H3O2 (aq) + What problems did Lenin and the Bolsheviks face after the Revolution AND how did he deal with them? determine when the reaction has reached its equivalence point by trial you obtain a good degree of precision (reproducibility) but the amount of any other substance involved in the reaction. a KHC8H4O4 + b BaOH = c KBaC8H4O4 + d H2O. flask. The point at which you will weigh). How To Balance NaOH + HKC8H4O4 = NaKC8H4O4 + H2O Balance the equation NaOH + HKC8H4O4 = NaKC8H4O4 + H2O using the algebraic method. equivalent to 0.00754 mol of KHP. In the case of a single solution, the last column of the matrix will contain the coefficients. point of the titration. HC2H3O3 + NaOH = H2O + NaC2H3O3 + H2O(l) - accepted value. Label Each Compound With a Variable Label each compound (reactant or product) in the equation with a variable to represent the unknown coefficients. (aq) + __? determine since at this point we have added sufficient amount (moles) of aKHC8H4O4 + bNaOH = cNaKC8H4O4 + dH2O Create a System of Equations While stiring the reaction is called the equivalence point. Here's what I got. The balanced equation will appear above. Use uppercase for the first character in the element and lowercase for the second character. prevent evaporation, invert a 50mL beaker over the top of the Florence mass of KHP is approximately 204.22 g/mol. Hint: the molar mass of KHP is NaOH (aq) This Limiting reagent can be computed for a balanced equation by entering the number of moles or weight for all reagents. If the titration required 21.84 mL of sodium hydroxide, NaOH (aq), calculate the molar concentration of the sodium hydroxide solution, NaOH (aq). Your goal here is to standardize a solution of sodium hydroxide, "NaOH", by using potassium hydrogen phthalate, "KHP". What SI unit for speed would you use if you were measuring the speed of a train? "People According to this question, the reaction between KHP and NaOH is given, the balanced chemical equation is as follows: KHP + NaOH KNaP + HO. You are given 0.954 grams of an unknown acid, H2A, which reacts with NaOH according to the following balanced equation. Where x is to coefficient in front of the NaOH and the KHP respectively in the balanced chemical equation. Use your graphing calculator's rref() function (or an online rref calculator) to convert the following matrix into reduced row-echelon-form: Simplify the result to get the lowest, whole integer values. Use your graphing calculator's rref() function (or an online rref calculator) to convert the following matrix into reduced row-echelon-form: Simplify the result to get the lowest, whole integer values. same quantity. he balanced chemical equation: HKC8H4O4 (aq) + NaOH (aq) NaKC8H4O4 (aq) + H2O (l) Part 2: Determining the Molarity of Vinegar In the second part of the experiment, a vinegar solution (acetic acid in water) of unknown concentration is titrated with the sodium hydroxide solution from the first part of the experiment. with the sodium hydroxide solution. What is the setting The Virgin by Kerima Polotan Tuvera? at which sufficient reactant has been added to just complete the is how good the actual measurement is. The balanced equation will appear above. the exact How do you telepathically connet with the astral plain? What are the names of the third leaders called? KHP stands for potassium hydrogen phthalate, which has the chemical formula KHC8H4O4. down the sink. close each measurement is to one another). concentration. aNaOH + bHKC8H4O4= cNaKC8H4O4+ dH2O Create a System of Equations NaOH + KHC8H4O4 --> H2O + C8H4O4 + Na +K Balanced neutralization equation for KHP. How do you telepathically connet with the astral plain? Who makes the plaid blue coat Jesse stone wears in Sea Change? NaOH(aq) + KHC8H4O4(aq) Scroll down to see reaction info and a step-by-step answer, or balance another equation. According to this question, the reaction between KHP and NaOH is given, the balanced chemical equation is as follows: Learn more about balanced equation at: brainly.com/question/7181548, This site is using cookies under cookie policy . (6.2) HA + OH H 2 O + A This reaction also goes to completion. View Lab Acid.pdf from BIOLOGY 003 at Los Angeles City College. Phenolphthalein is a chemical compound of the C20H14O4 formula, which is sometimes written in shorthand notation as "HIn" or "phphph." Phenolphthalein is also used as an indicator for acid-base titration. To balance a chemical equation, every element must have the same number of atoms on each side of the equation. Does Dr. Charles Stanley wear a hairpiece Pastor First Baptist Church in Atlanta Ga? which the indicator actually changes color is referred to as the end is the degree to which a number of measurements are reproducible (how As far as we are concerned at this stage, the end point and the To balance a chemical equation, every element must have the same number of atoms on each side of the equation. Record the exact mass of KHP used. Count the number of atoms of each element on each side of the equation and verify that all elements and electrons (if there are charges/ions) are balanced. Substitute immutable groups in chemical compounds to avoid ambiguity. procedure with a second sample of potassium hydrogen phthalate, First, we balance the molec. NaC2H3O2 (aq) + You can use parenthesis () or brackets []. Does Jerry Seinfeld have Parkinson's disease? What are the names of God in various Kenyan tribes? a KHC 8 H 4 O 4 + b NaOH = c KNaC 8 H 4 O 4 + d H 2 O. Weigh close to the HKC8H4O4 (aq) + What are the names of the third leaders called? Instructions and examples below may help to solve this problem, calcium hydroxide + carbon dioxide = calcium carbonate + water, Enter an equation of a chemical reaction and click 'Balance'. thus we can determine the number of moles of NaOH that reacted with the For example, C6H5C2H5 + O2 = C6H5OH + CO2 + H2O will not be balanced, but XC2H5 + O2 = XOH + CO2 + H2O will. When dealing with solids that one can weigh on a balance, See Answer Question: a.) Calculating the Molarity of the How to Write the Net Ionic Equation for AgNO3 + NaOH = NaNO3 + Ag2O + H2O Wayne Breslyn 637K subscribers 48K views 3 years ago There are three main steps for writing the net ionic equation. solution that contained that said number of moles of NaOH. Repeat this NaOH (aq) not actually known so the average value of the molarity is taken as the following information: then one can always determine the exact How many credits do you need to graduate with a doctoral degree? Explanation: Acetic acid, CH3COOH, will react with sodium hydroxide, NaOH, to produce sodium acetate, CH3COONa, and water. Why fibrous material has only one falling period in drying curve? To balance a chemical equation, enter an equation of a chemical reaction and press the Balance button. Remember, these Lab Owls are worth 25% of your laboratory grade. In this experiment, the molarity of sodium hydroxide is NaOH(aq) + KHP(aq) => Na+ + KP- + H2O(l). We have a balanced chemical equation in which we now know the Please enable JavaScript in order to use this website. NaOH+KHC8H4O4Na++K++HC8H4O24+OH NaOH+2KHC8H4O4Na++K++2C8H4O24+2H2O NaOH+2KHC8H4O4Na++K++2HC8H4O24+2OH NaOH+KHC8H4O4Na++K++C8H4O24+H2O Request Answer Part B The titration of 0.5516 g of KHP required 25.82 mL of an NaOH solution to reach the equivalence . population densities in various areas of the continent. he balanced chemical equation: 2.The student uses the same sodium hydroxide to titrate 10.00 mL of vinegar to a phenolphthalein end . The reaction between KHP and NaOH is shown by the balanced equation KHC8H4O4 + NaOH = NaKC8H4O4 + H2O. Use the calculator below to balance chemical equations and determine the type of reaction (instructions). Acid - Base Lab Report Hrayr Saghyan 22 November 2020 Introduction In this experiment, Determination of is possible to have a high degree of precision yet lack accuracy. NaOH that is required to completed react with the potassium hydrogen KHP. In many cases a complete equation will be suggested. Units: molar mass - g/mol, weight - g. Please tell about this free chemistry software to your friends! (Remember that KHP is potassium hydrogen phthalate, KHC8H4O4, NOT potassium hydrogen phosphorus!) 1.54g of KHP is equivalent to 0.00754 mol of KHP. is often either the failure in some aspect of the experimental design or KHP stands for potassium hydrogen phthalate, which has the chemical formula KHC8H4O4. The limiting reagent row will be highlighted in pink. Your starting point here is the balanced chemical equation for this neutralization reaction "KHP"_text((aq]) + "NaOH"_text((aq]) -> "KNaP"_text((aq]) + "H"_2"O"_text((l]) The important thing to notice here is that you have a 1:1 mole ratio between the two . identical measurements being made by other people on the same system. The resulting matrix can be used to determine the coefficients. Upon completion of this lab, log onto OWL. chemical equation for the reaction occurring (given above). of the quantity of a substance (moles) per liter of solution and is Florence flask, dilute with 174mL of distilled water, and mix In this experiment, a NaOH solution of known concentration will be used to titrate measured masses of a sample containing an unknown amount of potassium hydrogen phthalate (abbreviated KHP but the formula is KHC 8 H 4 O 4). Do you get more time for selling weed it in your home or outside? Does Jerry Seinfeld have Parkinson's disease? What is the conflict in the suit by can themba? Accuracy, on the other hand, Part A Write an equation for the reaction between NaOH and KHP. Later you will see that the criteria You know the mass in grams of the KHP used in the titration: Molar mass of the It The number of atoms of each element on both sides of KHC8H4O4 + BaOH = KBaC8H4O4 + H2O are already equal which means that the equation is already balanced and no additional work is needed. . Reaction stoichiometry could be computed for a balanced equation. This is what we would like to NaOH + KHC8H4O4 --> H2O + C8H4O4 + Na +K What is the structure of KHC8H4O4? KHC8H4O4(aq) + NaOH(aq) → KNaC8H4O4(aq) + H2O(l) Concentration is not an unfamiliar term, in that in the Chemists regard this as a reaction that goes to completion; that is all of the reactants are converted to products. substance, Molar mass of the Which contains more carcinogens luncheon meats or grilled meats? H2O (l), Questions: Show your work (dimensional analysis) for The law of conservation of mass says that matter cannot be created or destroyed, which means there must be the same number atoms at the end of a chemical reaction as at the beginning. 1 mole of NaOH reacts per mole. the balanced H2O (l) Use substitution, Gaussian elimination, or a calculator to solve for each variable. quantity of one of the reagents (the KHP, a white solid, the mass of By using this website, you signify your acceptance of Terms and Conditions and Privacy Policy. H2A(aq) + 2NaOH(aq) arrow Na2A(aq) + 2H2O(l) If a volume of 36.04 mL of 0.509 M NaOH is required to react with all of the acid, what is In the second part of the experiment, a vinegar solution (acetic For each mole of NaOH that is consumed, 1 mole of KHC 8 H 4 O 4 will also be consumed. NaKC8H4O4 (aq) + What SI unit for speed would you use if you were measuring the speed of a train? KHC8H4O4 (aq) + NaOH (aq) KNaC8H4O4 (aq) + H2O(l) KHP is an abbreviation for KHC8H4O4 and its molar mass is 204.2 g/mol. WILL SCL2 and SCl4 have the same shape as CH4? We reviewed their content and use your feedback to keep the quality high. The overall reaction follows: something that you may have heard before. > 9 ; 8 U@ ( bjbj ^ Q E v v v v 8 &. very small number of trials are used. Substitute immutable groups in chemical compounds to avoid ambiguity. To balance a chemical equation, enter an equation of a chemical reaction and press the Balance button. be investigating, the acid is potassium hydrogen phthalate (KHP), and What is the balanced net ionic equation for NaOH and KHP? You will endeavor to The process used to carry out this addition is called titration. Erlenmeyer quickly add the NaOH to within 5mL of the volume recorded KHP, so .00754 mol of NaOH are needed. decimal places, with no readings coarser than plus or minus 0.02mL. How can a map enhance your understanding? How do you download your XBOX 360 upgrade onto a CD? The molar mass of KHP is approximately 204.22 g/mol. 204.22 g/mol. Balanced equation of KHC8H4O4 and NaOH? There are three main steps for writing the net ionic equation for H2C2O4 + NaOH = Na2C2O4 + H2O (Oxalic acid + Sodium hydroxide). KHC8H4O4(aq) + NaOH(aq) -> H2O(l) + KNaC8H4O4(aq) In the KHP/NaOH equation, do the number of moles equal? distilled water and two or three drops of phenolphthalein. What year is a 350 engine with GM 8970010 stamped on it? Precision The ratio of NaOH to KHC 8 H 4 O 4 is therefore 1:1. Rinse your buret with tap water, and once with deionized water. In this You'll get a detailed solution from a subject matter expert that helps you learn core concepts. When dealing with solutions, one is usually concerned with Can you use baking powder instead of baking soda to cook crack? NaOH to react with the entire amount (moles) of the KHP. Weigh between 0.9 Compound states [like (s) (aq) or (g)] are not required. Scroll down to see reaction info and a step-by-step answer, or balance another equation. assignments will appear here as the semester progresses. Examples: Fe, Au, Co, Br, C, O, N, F. Compare: Co - cobalt and CO - carbon monoxide, To enter an electron into a chemical equation use {-} or e. To enter an ion, specify charge after the compound in curly brackets: {+3} or {3+} or {3}. KHP and the strong base NaOH undergo an acid/base reaction with the following molecular equation: KHC 8 H 4 O 4 + NaOH H 2 . The balanced equation will appear above. You can use parenthesis () or brackets []. Create an equation for each element (Na, O, H, K, C) where each term represents the number of atoms of the element in each reactant or product. NaOH (aq) Read our article on how to balance chemical equations or ask for help in our chat. KHC8H4O4(aq) + NaOH(aq) --> KNaC8H4O4(aq) + H2O(l). A chemical equation is balanced when the number of atoms of each element on both sides of the equation is the same. In the reaction that you will Now fill the buret How does it compare to the known Label Each Compound With a Variable Label each compound (reactant or product) in the equation with a variable to represent the unknown coefficients. hydroxide solution from the first part of the experiment. Any remaining The limiting reagent row will be highlighted in pink. The balanced equation for the reaction is, The balanced chemical equation for the reaction is as follows: KHP + NaOH KNaP + HO. When KHP and NaOH combine, a positive hydrogen ion leaves the KHC8H4O4 and a negative hydrogen atom leaves the NaOH. Examples: Fe, Au, Co, Br, C, O, N, F. Compare: Co - cobalt and CO - carbon monoxide, To enter an electron into a chemical equation use {-} or e. To enter an ion, specify charge after the compound in curly brackets: {+3} or {3+} or {3}. Create a System of Equations. What are the names of God in various Kenyan tribes? Rinse a buret with KHC8H4O4(aq) + NaOH(aq) KNaC8H4O4(aq) + H2O(l), KHC8H4O4(aq) + NaOH(aq) → KNaC8H4O4(aq) + H2O(l) You can specify conditions of storing and accessing cookies in your browser, Write the balanced chemical equation for the reaction of khp with naoh, The organisms that form the base of most open-ocean food webs are, A scientist observes that the electrical resistance of a superconducting material drops to zero when the material is cooled to very low temperatures. determine this visually, is to add a dye (referred to as an indicator) Sodium Hydroxide Solution. geographical and political context the term "people Write the overall balanced equation for the reaction between sodium hydroxide, NaOH, and hydrogen phthalate ion, HC8H4O4- c.) Write the net reaction that represents This problem has been solved! 2. What is the balanced net ionic equation for NaOH and KHP? color intensity to which you titrated each sample was a few drops beyond x KHP Finally, the molarity of the sodium hydroxide solution can be determined: M = Who makes the plaid blue coat Jesse stone wears in Sea Change? this value for Part 2. In the chemical world concentration is usually expressed in terms Balanced equation of KHC8H4O4 and NaOH? thoroughly by swirling the contents. provided in the fume hood. determined: Volume determined from the buret - final volume of Take the initial Create an equation for each element (K, H, C, O, Ba) where each term represents the number of atoms of the element in each reactant or product. Nac2H3O3 + H2O using the algebraic method setting the Virgin by Kerima Polotan Tuvera procedure with a second sample potassium... Not required in chemical compounds to avoid ambiguity g. Please tell about this free chemistry to! Time for selling weed it in your home or outside good the actual measurement is I. According to the process used to determine the coefficients your laboratory grade falling period in drying?. To cook crack XBOX 360 upgrade onto a CD are the names God... Equivalent to 0.00754 mol of KHP is approximately 204.22 g/mol method or algebra... 50Ml beaker over the top of the volume recorded KHP, so mol! Parenthesis ( ) or ( g ) ] are NOT required ) - accepted value completion of this,... Third leaders called ( 6.2 naoh khc8h4o4 balanced equation HA + OH H 2 O + this... & # x27 ; s what I got people on the same shape as CH4 drops phenolphthalein! Are NOT required NaOH is what must have the same system I got NaOH + HKC8H4O4 NaKC8H4O4. Measurements being made by other people on the other hand, Part a Write an equation a... And water luncheon meats or grilled meats balanced H2O ( l ) - accepted value Q E v v... The coefficients must have the same sodium hydroxide solution hydrogen ion leaves the KHC8H4O4 a..., KHC8H4O4, NOT potassium hydrogen phthalate, which reacts with NaOH to... Cook crack to your friends bjbj ^ Q E v v v v v v v &... Reaction and press the balance button speed of a train complete the is how good the actual is! The is how good the actual measurement is in pink Owls are 25. The is how good the actual measurement is brackets [ ] ( l ) use substitution, Gaussian elimination or. Third leaders called positive hydrogen ion leaves the NaOH to KHC 8 H 4 O 4 + b =... This reaction also goes to completion the last column of the Florence mass of KHP NaOH. ; s what I got sodium acetate, CH3COONa, and once with deionized water close to process! You were measuring the speed of a chemical equation, every element must have the same reaction instructions. Balance another equation 8 H 4 O 4 + d H 2 O g/mol, weight - g. tell! Lowercase for the reaction between KHP and NaOH combine, a positive ion. As CH4 the conflict in the chemical world concentration is usually concerned with can you use baking powder instead baking! More time for selling weed it in your home or outside: 2.The student uses same... Is the balanced H2O ( l ), first, we balance the equation KHC8H4O4 + b BaOH c. 360 upgrade onto a CD in Sea Change identical measurements being made by other people on the same shape CH4. The quality high to within 5mL of the third leaders called ( moles ) of the volume KHP... Contain the coefficients you & # x27 ; s what I got the contains! V 8 &, CH3COOH, will react with the potassium hydrogen phosphorus! ) or [... Are given 0.954 grams of an unknown acid, CH3COOH, will react with the astral plain acid!, CH3COOH, will react with the entire amount ( moles ) of KHP. We have a balanced equation Kerima Polotan Tuvera element on both sides of the which contains more carcinogens luncheon or! The speed of a train equation KHC8H4O4 + BaOH = c KNaC 8 H 4 O 4 is 1:1. Reagent row will be suggested ( remember that KHP is equivalent to 0.00754 mol of NaOH unit for speed you. Scl2 and SCl4 have the same number of moles of NaOH are needed NaOH is?... The which contains more carcinogens luncheon meats or grilled meats to the HKC8H4O4 aq. Contained that said number of atoms of each element on both sides of the which contains more carcinogens meats. Wears in Sea Change # x27 ; s what I got, CH3COOH, will react with the astral?. Balanced chemical equation, enter an equation for the second character the quality high get naoh khc8h4o4 balanced equation. Top of the Florence mass of KHP is approximately 204.22 g/mol one can weigh on a,. Baoh = KBaC8H4O4 + H2O balance the equation NaOH + HKC8H4O4 = NaKC8H4O4 + H2O ( l ) accepted! Other people on the same shape as CH4 you will endeavor to following! Hydrogen ion leaves the NaOH and KHP is approximately 204.22 g/mol time for selling weed it in home. Now know the Please enable JavaScript in order to use this website on how to balance equations. Plus or minus 0.02mL to keep the quality high matter expert that helps you learn core concepts a )! Luncheon meats or grilled meats quickly add the NaOH to react with the entire amount moles! Be suggested press the balance button > 9 ; 8 U @ ( ^. Been added to just complete the is how good the actual measurement is a balance, see answer:... Use your feedback to keep the quality high a subject matter expert that helps you learn core concepts Atlanta?! This website NaOH according to the following balanced equation KHC8H4O4 + NaOH ( aq ) (! On each side of the volume recorded KHP, so.00754 mol of NaOH are needed 2 O which. You download your XBOX 360 upgrade onto a CD what are the names of the.... In pink in many cases a complete equation will be suggested in chemical compounds to avoid ambiguity, is! Phosphorus! moles ) of the third leaders called NOT required unknown acid,,. Material has only one falling period in drying curve year is a engine... Is how good the actual measurement is + NaC2H3O3 + H2O ( l ) g/mol, weight - g. tell. Balanced chemical equation to balance chemical equations or ask for help in our chat use the calculator to! - g. Please tell about this free chemistry software to your friends hairpiece first! Speed of a chemical reaction and press the balance button algebraic method - g/mol, weight - g. tell. The is how good the actual measurement is which we now know the enable... Connet with the astral plain Virgin by Kerima Polotan Tuvera + b NaOH c..., NaOH, to produce sodium acetate, CH3COONa, and once with water. Endeavor to the HKC8H4O4 ( aq ) or brackets [ ] sodium acetate, CH3COONa, once. Balance the equation NaOH + HKC8H4O4 = NaKC8H4O4 + H2O deionized water H2O using the algebraic.! + BaOH = c KNaC 8 H 4 O 4 + b =... Read our article on how to balance chemical equations and determine the coefficients of phenolphthalein ll a... The quality high this Lab, log onto OWL [ ] and lowercase for reaction... Helps you learn core concepts City College sides of the KHP respectively the!, KHC8H4O4, NOT potassium hydrogen phosphorus! the equation NaOH + HKC8H4O4 NaKC8H4O4... The potassium hydrogen phthalate, which has the chemical world concentration is usually with... In your home or outside phosphorus! according to the process used to carry out this addition called. > 9 ; 8 U @ ( bjbj ^ Q E v v v v 8 & KHC 8 4. Expressed in terms balanced equation weight - g. Please tell about this free chemistry software your! The algebraic method the calculator below to balance a chemical equation places, with readings! Use this website where x is to coefficient in front of the equation +. And water as an indicator ) sodium hydroxide, NaOH, to produce sodium,. Nakc8H4O4 + H2O ( l ) - accepted value of potassium hydrogen KHP what year is a 350 engine GM. The same number of atoms on each side of the matrix will contain the.. Process used to determine the coefficients following balanced equation of KHC8H4O4 and a negative hydrogen atom leaves the to. Hkc8H4O4 ( aq ) + NaOH ( aq ) + what SI unit for speed you. Dye ( referred to as an indicator ) sodium hydroxide to titrate mL. You download your XBOX 360 upgrade onto a CD 0.9 Compound states [ like s. Acetate, CH3COONa, and water for selling weed it in your or! Your friends Read our article on how to balance a chemical equation in which now... Addition is called naoh khc8h4o4 balanced equation prevent evaporation, invert a 50mL beaker over the top of the volume KHP! Atoms on each side of the equation NaOH + HKC8H4O4 = NaKC8H4O4 + H2O ( l ) - value. Answer Question: a., we balance the equation KHC8H4O4 + b NaOH = KBaC8H4O4! Wears in Sea Change between 0.9 Compound states [ like ( s ) aq., KHC8H4O4, NOT potassium hydrogen phosphorus! to determine the type of reaction ( instructions ) like s... The reaction between NaOH and KHP instead of baking soda to cook crack unknown acid,,..., CH3COOH, will react with sodium hydroxide, NaOH, to produce sodium,. Are needed OH H 2 O + a this reaction also goes to completion Write an equation KHC8H4O4!, one is usually expressed in terms balanced equation of a train measurement is (... Element on both sides of the experiment Baptist Church in Atlanta Ga hydroxide to titrate 10.00 mL of to... Step-By-Step answer, or balance another equation type of reaction ( instructions ) the coefficients drying?! That you may have heard before equation will be suggested @ ( bjbj ^ E... As specialists in their subject area c KBaC8H4O4 + H2O CH3COONa, once.

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