In the electrochemical cell $H_{2(g)}, 1 \ atm | H^{+} (1 \ M) || Cu^{2+} (1 \ M) | Cu_{(s)}$,which one of the following statements is true?
- A$H_2$ is cathode; $Cu$ is anode
- BOxidation occurs at $Cu$ electrode
- CReduction occurs at $H_2$ electrode
- D$H_2$ is anode; $Cu$ is cathode
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Which of the following statements is true for an electrolytic cell?
On charging the lead storage battery,the oxidation state of lead changes from $x_1$ to $y_1$ at the anode and from $x_2$ to $y_2$ at the cathode. The values of $x_1, y_1, x_2, y_2$ are respectively $:$
When an acid cell is charged,then
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View SolutionWrite a note on lead storage cell (battery).
If $\Lambda _{NaCl}^{o}=126\,S\,cm^{2}mol^{-1}$,$\Lambda _{KBr}^{o}=152\,S\,cm^{2}mol^{-1}$,and $\Lambda _{KCl}^{o}=150\,S\,cm^{2}mol^{-1}$,then find $\Lambda ^{o}_{NaBr}$ in $S\,cm^{2}mol^{-1}$.
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