h2s acts as reducing agent why?
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Explanation:
since it has +4 oxidation state which is exactly between its highest oxidation state +6 and lowest oxidation state +2 ,Thus it can change its oxidation number either from +4 to-2(reduction) and +4 to+6 (oxidation) .
Where as in H2S the oxidation state of sulphur is -2 so it can lose electrons to attain +4 and +6 oxidation state but it can not gain the electrons. Therefore, H2S act as reducing agent only
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