| Assertion: Reaction of \[S{{O}_{2}}\] and \[{{H}_{2}}S\] in the presence of \[F{{e}_{2}}{{O}_{3}}\] catalyst gives elemental sulphur. |
| Reason:\[S{{O}_{2}}\] is a reducing agent. |
A) If both assertion and reason are correct and reason is correct explanation for assertion.
B) If both assertion and reason are correct but reason is not correct explanation for assertion.
C) If assertion is correct but reason is incorrect.
D) If assertion is wrong, but reason is correct.
Correct Answer: C
Solution :
Correct reason : \[S{{O}_{2}}\] acts as oxidising agent and not as reducing agent in this reaction because the oxidation number of sulphur decreases from +4 to zero. \[2{{H}_{2}}S+_{SO}^{+4}\to 2{{H}_{2}}O+3s{}^\circ \]
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