Question

When oxalic acid is acted upon by sulphuric acid, some products are formed. Oxidation state of carbon in the product/s formed is/are:

• A. $0$
• B. $+2$
• C. $+4$
• D. $-4$

Answer 1

Answer: (B), (C)

The correct options are
B $+2$
C $+4$

Reaction of Oxalic acid and Sulphuric acid.

$H_2{C}_2^{+3}{O}_4+H_2{SO}_4⟶H_{2}O+{CO}_2^{+4}+{CO}^{+2}$

The oxidation state of Carbon is changing to $+2$ and $+4$