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Question

Which of the following will not be produced when H2S reacts with MnO4 in acidic solutions?

A
Mn2+
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B
SO2
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C
S
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D
H2O
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Solution

The correct option is B SO2
When H2S reacts with MnO4 in acidic solutions, then H2S is oxidized to sulphur and Mn7+ is reduced to Mn2+.
H2S2H++S25S2+2MnO4+16H+2Mn2++8H2O+5S

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