Question

$\text{KMn}{\text{O}}_{\text{4}}$ oxidises oxalic acid in acid medium. The number of $\text{C}{\text{O}}_2$ molecules produced as per the balanced equation is :

• A. 10
• B. 8
• C. 6
• D. 3

Answer 1

Answer: (A)

The balanced chemical equation of the oxidation of oxalic acid is as under: $2KMn{O}_4+3H_{2}S{O}_4+5\underset{COOH}{\underset{|}{\mathrm{COOH}}}\to$ $K_{2}S{O}_4+2MnS{O}_4+10C{O}_2+8H_{2}O$ From the above equation it is clear that in . balanced chemical equation of oxidation o oxalic acid by KMn04 in acidic medium evolve 10 molecules of $C{O}_2.$