Consider a titration between the monoprotic acid called lactic acid, HC3H503, an
ID: 973127 • Letter: C
Question
Consider a titration between the monoprotic acid called lactic acid, HC3H503, and the base potassium hydroxide. KOH. For each parts a - c. a) Write a balanced net ionic equation that represents the neutralization reaction that occurs between lactic acid and potassium hydroxide. b) Write the balanced net ionic equation that represents ihe main hydrolysis reaction that will occur at the equivalence point for this titration. c) Will the titration solution be acidic, basic, or neutral at the equivalence point*} Explain your answer briefly, making reference to a chemical ryaclMI thai SUPPWlS.YttUf answer.Explanation / Answer
a) the overall reaction:
HC3H5O3(aq) + KOH(aq) --------------> KC3H5O3(aq) + H2O(l)
H+(aq) + C3H5O3-(aq) + K+(aq) + OH-(aq) --------------> K+(aq) + C3H5O3-(aq) + H2O(l)
b) At the equivalence point, the above reaction is finished and the acid will be consumed and the base will begin to be in excess so:
C3H5O3-(aq) + H2O(l) --------------> C3H5O3-(aq) + H+(aq) + OH-(aq)
c) Assuming that we want to titrate the acid with the KOH, at the equivalence point, the moles of acid are all consumed, so the base will begin to be in excess (moles) at this point, and with the fact that this is a weak acid being titrated with a strong base, the solution will be basic at the equivalence point.
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