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  • In which of the following, salt bridge is not needed?Option: 1 <img alt="\mathrm{Pb}\left|\mathrm{PbSO}_{4}(\mathrm{s})\right| \mathrm{H}_{2} \mathrm

In which of the following, salt bridge is not needed?

Option: 1

\mathrm{Pb}\left|\mathrm{PbSO}_{4}(\mathrm{s})\right| \mathrm{H}_{2} \mathrm{SO}_{4}\left|\mathrm{PbO}_{2}(\mathrm{s})\right| \mathrm{Pb}


Option: 2

\mathrm{Cd\: }|\mathrm{\: CdO}(\mathrm{s})| \mathrm{\: KOH}(\mathrm{aq})\left|\mathrm{\: NiO}_{2}(\mathrm{s})\right| \mathrm{Ni}


Option: 3

\mathrm{Fe}(\mathrm{s})|\mathrm{\: FeO}(\mathrm{s})| \mathrm{KOH}(\mathrm{aq})| \mathrm{Ni}_{2} \mathrm{O}_{3}(\mathrm{s}) | \mathrm{Ni}


Option: 4

\mathrm{all \: of \: these}


Answers (1)

best_answer

In all of these reactions, the salt bridge is not necessary because the electrolyte is present in all reactions.

if one of the half cells does not contain an electrolyte then the salt bridge is not required.


Therefore, option(4) is correct

Posted by

Divya Prakash Singh

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