How many equivalents are there per mol of $H_{2} S$ in its oxidation to $S O_{2}$ ?

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Solution

The correct option is B 6
The oxidation number of S in $H_{2} S$ is -2.
The oxidation number of S in $S O_{2}$ is +4.
The change in the oxidation number of S when $H_{2} S$ is oxidised to $S O_{2}$ is $+ 4 - (- 02) = + 6$ .
Hence, there are 6 equivalents per mole of $H_{2} S$ in its oxidation to $S O_{2}$ .

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