Question

Assertion (A): In aqueous solution, SO2 reacts with H2S liberating sulphur.
Reason (R): SO2 is an effective reducing agent.
a. Both A and R are true and R is the correct explanation of A.
B. Both A and R are true but R is not the correct explanation of A.



Ans = (b)

Answer 1

Explanation:

SO 2 can act both as an oxidising agent and a reducing agent but in this reaction, SO2 is an oxidising agent and H2S is a reducing agent.

so2 + 2h2s --- s + 2h2o

S2−⟶S+2e (Oxidation) (Reducing agent

4e −+SO 2⟶S (Reduction) (Oxidising agent)

Answer 2

Explanation:

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