MCQ
Bad conductor of electricity is
- ✓${H_2}{F_2}$
- B$HCl$
- C$HBr$
- D$HI$
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A current was passed for $10$ hours. $10.8\ g Ag$ was deposited at cathode in $(III)$ electrolytic cell during electrolysis if current efficiency is $50\%.$
If $Z_1,$ $Z_2$ and $Z_3$ be the electrochemical equivalent in the formation of $H_2, Cu$ and $Ag$ respectively, hence $Z_1 : Z_2 : Z_3$ would be


$\mathop {Pt\,|\,C{l_2}\left( g \right)}\limits_{\left( {0.4\,bar} \right)} \,|\,\mathop {C{l^ - }\left( {aq.} \right)}\limits_{0.1\,M} \,||\,\,\mathop {C{l^ - }\left( {aq.} \right)}\limits_{0.01} \,|\,\mathop {C{l_2}\left( g \right)\,|\,Pt}\limits_{0.2\,bar} $
the measured potential at $298\, K$ is .............. $\mathrm{V}$