olivia Thul

A student analyzed an aqueous solution of ascorbic acid $(H_2{C}_6{H}_6{O}_7,MW=176\mathrm{.}12\frac{g}{m}ol)$

which is a diprotic acid also known as vitamin $C.$ The student measured out a $125\mathrm{.}00mL$

sample of the ascorbic acid solution and titrated it with a $0\mathrm{.}5800M$ solution of lithium

hydroxide. The initial burette reading was $13\mathrm{.}12mL.$ When the end point of the titration

was reached, the burette had a reading of $34\mathrm{.}78mL.$

a$.$ Write a balanced chemical equation for the reaction between malonic acid and

lithium hydroxide. You do not need to include states of matter on the molecules

in the reaction.

b$.$ Use the data to determine the molarity of the ascorbic acid solution.

c$.$ Use the data to determine the mass of ascorbic acid in the student's sample of

the ascorbic acid solution.