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On passing a current through molten KCl ...

On passing a current through molten `KCl 19.5` g of K is deposited. The amount of `Al` deposited by the same quantity of electricity if passed through molten `AlCl_(3)` is

A

`4.5` g

B

`9.0` g

C

`13.5` g

D

27 g

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The correct Answer is:
A
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