You are given 0.857 g of an unknown diprotic acid, H₂A. It reacts with NaOH according to this balanced
equation:
H₂A(aq) + 2 NaOH(aq) →→→ Na₂A(aq) + 2 H₂O()
If a volume of 18.8 mL of 0.690 M NaOH is required to react with all of the acid, what is the molar mass of
the acid?
132 g/mol
66.2 g/mol
264 g/mol
33.2 g/mol
13.2 g/mol
