Question

Assertion : Conversion of potassium ferrocyanide to potassium ferricyanide is an oxidation process.
Reason : Oxidation is the addition of oxygen/ electronegative element to a substance or removal of hydrogen/electropositive element from a substance.

• A. If both assertion and reason are true and reason is the correct explanation of assertion.
• B. If both assertion and reason are true but reason is not the correct explanation of assertion.
• C. If assertion is true but reason is false.
• D. If both assertion and reason are false.

Answer 1

Answer: (A)

$\underset{\text{Potassium ferrocyanide}}{2 K _{4}\left[ Fe ^{+2}( CN )_{6}\right]( aq )}+ H _{2} O _{2}( aq ) \rightarrow \underset{\text{Potassium ferrocyanide}}{2K_3[Fe^{+3}(CN)_6](aq) + 2KOH}$
The reaction is oxidation reaction due to removal of electropositive element (K) from potassium ferrocyanide to form potassium ferricyanide.
Conversion of potassium ferrocyanide to potassium is an oxidation process.
Oxidation is the additon of oxygen / electronegative element to a substance or removal of hydrogen / electropositive element from a substance.