Question

Equivalent weight of crystalline oxalic acid is:

• A. $90$
• B. $63$
• C. $53$
• D. $45$

Answer 1

Answer: (B)

$63$

Crystalline oxalic acid is $HOOC-COOH.2H_{2}O$.

It contains 2 molecules of water per molecule of oxalic acid.

Equivalent mass $=\frac{\text{mol. wt.}}{\text{basicity}}=\frac{126}{2}=63$.

Hence, the correct option is $B$