Chapter 16, Problem 102E

Oxalic acid dihydrate is a solid, diprotic acid that can be used in the laboratory as a primary standard. Its formula is ${\text{H}}_{\text{2}}{\text{C}}_{\text{2}}{\text{O}}_{\text{4}}\cdot {\text{2H}}_{\text{2}}\text{O}$. A student dissolves $0.750\text{ g}$ of ${\text{H}}_{\text{2}}{\text{C}}_{\text{2}}{\text{O}}_{\text{4}}\cdot {\text{2H}}_{\text{2}}\text{O}$ in water and titrates the resulting solution with a solution of sodium hydroxide of unknown concentration. If $28.0\text{ mL}$ of sodium hydroxide solution are required to neutralize the acid, what is the molarity of the sodium hydroxide solution?