2FeCl3+H2S→2FeCl2+2HCl+S
A. +2 to +3
B. 0 to +2
C. +3 to +2
D. +3 to 0
Correct Answer: Option C
Explanation
The oxidation number of Iron in FeCl3 = +3. The oxidation number in FeCl2 = +2.
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