NEET2012ChemistryRedox ReactionsActual
A mixture of potassium chlorate, oxalic acid and sulphuric acid is heated. During the reaction which element undergoes maximum change in the oxidation number?
Options
- AS
- BH
- CCl
- DC
Correct answer
C. Cl
Step-by-step solution
When a mixture of potassium chlorate, oxalic acid and sulphuric acid is heated, the following reaction occurs : ( +5 KClO ₃ + H ₂ C ₂ O ₄+ +6 H ₂ S O ₄ +6 K ₂ S O ₄ + -1 KCl + CO ₂+ H ₂ O ) i.e. maximum change in oxidation number is observed in ( Cl (+5 ) to-1). Thus, Cl is the element which undergoes maximum change in the oxidation state.