Question

Calculate the amount of oxalic acid {(COOH)2.2H2O} required to prepare 100ml of its 0.1 N solution​

Answer 1

Explanation:

For hydrated oxalic acid, (COOH)

2

​

.2H

2

​

O, molar mass is 126 g/mol.

Equivalent weight =

2

M

​

=63

Meq. of oxalic acid =500×0.1=50

E×1000

w

​

=50

w=

2

126

​

×50×1000=3.15 g

Hence, mass of oxalic acid required is 3.15 g.