oxalic acid dihydrate. H2C2O4 * 2H2O is also known as dihydroxy acid
The molar mass of oxalic acid dihydrate. is 126.07g/mol
so its half mole will be more enough to nuetralize one mole of hydrooxide ion
So the equivalent mass of oxalic acid will be equal to half of its molar mass
so it will be
63.05g
hope it helps
