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Question

When one faraday of current is passed, which of the following would deposit one gram atomic weight of the metal


A
BaCl2
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B
NaCl
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C
AlCl3
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D
CuCl2
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Solution

The correct option is B NaCl
To deposit one gram atomic weight of the metal on passing 1 faraday of current, one mole of electron should be involved in the electrochemical reaction. Only NaCl need one mole of electron. others need more than one mole of electron.
Hence, option B is the correct.

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