The negative $Zn$ pole of a Daniel cell,sending a constant current through a circuit,decreases in mass by $0.13 \ g$ in $30$ minutes. If the electrochemical equivalent of $Zn$ and $Cu$ are $32.5$ and $31.5$ respectively,the increase in the mass of the positive $Cu$ pole in this time is .............. $g$.
- A$0.126$
- B$0.190$
- C$0.141$
- D$0.242$
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How many faraday of electricity are required to deposit $10 \ g$ of calcium from molten calcium chloride using inert electrodes (in $F$)? (Molar mass of calcium $= 40 \ g \ mol^{-1}$)
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View SolutionMatch the following and select the correct option for the quantity of electricity,in $C \ mol^{-1}$,required to deposit various metals at the cathode:
List-$I$ List-$II$ $a. \ Ag^{+}$ $i. \ 386000 \ C \ mol^{-1}$ $b. \ Mg^{2+}$ $ii. \ 289500 \ C \ mol^{-1}$ $c. \ Al^{3+}$ $iii. \ 96500 \ C \ mol^{-1}$ $d. \ Ti^{4+}$ $iv. \ 193000 \ C \ mol^{-1}$
| List-$I$ | List-$II$ |
|---|---|
| $a. \ Ag^{+}$ | $i. \ 386000 \ C \ mol^{-1}$ |
| $b. \ Mg^{2+}$ | $ii. \ 289500 \ C \ mol^{-1}$ |
| $c. \ Al^{3+}$ | $iii. \ 96500 \ C \ mol^{-1}$ |
| $d. \ Ti^{4+}$ | $iv. \ 193000 \ C \ mol^{-1}$ |
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Same amount of electricity is passed through aqueous solutions of $AgNO_3$ and $CuSO_4$. The number of $Ag$ and $Cu$ atoms deposited are $x$ and $y$ respectively. The correct relationship between $x$ and $y$ is
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