In the chemical reaction Cl2 + H2S → 2HCl + S, the oxidation number of sulphur changes from
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a
0 to 2
b
-2 to 0
c
2 to 0
d
-2 to -1
answer is B.
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Detailed Solution
Oxidation state of Sulphur in H2S is -2, while it is zero in ‘S’, i.e., in this reaction oxidation of Sulphur and reduction of chlorine is takes place.