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If hydrogen electrodes dipped in two solutions of `pH=3` and `pH=6` are connected by a salt bridge, the `EMF_(cell)` isA. `0.052V`B. `0.104V`C. `0.177V`D. `0.3V` |
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Answer» Correct Answer - C For the given concentration cell `:` `H_(2)|H^(o+)(c_(1))||H^(o+)(c_(2))|H_(2)` `E_(cell)=-0.059(pH_(c)-pH_(a))` `=-0.059(3-6)=0.1773V` Cell will be feasible only when `[c_(2)]_(c)gt[c_(1)]_(a)` or `pH_(c)ltpH_(a)` |
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