InterviewSolution
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InterviewSolution
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In view of the signs of `Delta_(r)G^(0)` for the following reactions `PbO_(2)+Pbrarr2PbO,Delta_(r)G^(0)lt0` `SnO_(2)+Snrarr2SnO,Delta_(r)G^(0)gt0` Which oxidation state are more characteristic for lead and tin?A. For lead `+4` and for tin `+2`B. For lead `+2` and for tin `+2`C. For lead `+4` and for tin `+4`D. For lead `+2` and for tin `+4` |
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Answer» Correct Answer - D `DeltaG^(@) lt 0` for `PbO_(2)+Pbtp2PbO` `:.` Reaction is spontaneous in the forward direction i.e., `Pb^(2+)` is more stable than `Pb^(4+)` `DeltaG^(@) gt 0` for the reaction, `Sn^(+4)O_(2)+Snto2Sn^(2+)O` `:.` Reaction is non-spontaneous in the forward direction but is spontaneous in the backward direction. Hence, `Sn^(4+)` will be more stable than `Sn^(2+)` |
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