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3. H2S acts only as reducing agent while SO2 can act both as a reducing agent and oxidising agent. Explain.

3. H2S acts only as reducing agent while SO2 can act both as a reducing agent and oxidising agent. Explain.

Grade:upto college level

3 Answers

Sunil Kumar FP
askIITians Faculty 183 Points
9 years ago
The oxidation state of sulfur in H2S is -2 whereas in case of SO2 it is +4.The minimum and maximum oxidation state of sulfer is -2 and and +6.Thus for H2S it can only reduce or donate electron whereas in case of sulfurdioxide it can change its oxidation number either from +4 to-2(reduction) and +4 to+6 (oxidation)
garvit
21 Points
6 years ago
 
The oxidation state of sulfur in H2S is -2 whereas in case of SO2 it is +4.The minimum and maximum oxidation state of sulfer is -2 and and +6.Thus for H2S it can only reduce or donate electron whereas in case of sulfurdioxide it can change its oxidation number either from +4 to-2(reduction) and +4 to+6 (oxidation)
Rhituraj kashyap
21 Points
6 years ago
H2S has -2 as oxidation state but SO2 has +4 oxidation state , H2S can only increase the oxidation state as it as the min and max value between -2 to +6 but SO2 can do both oxidation and reduction because it has states between -2 to + 6 and +4 to +6

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