Question

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

• A. BaCl${}_2$
• B. NaCl
• C. AlCl${}_3$
• D. CuCl${}_2$

Answer 1

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.