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If one mole electrons is passed through ...

If one mole electrons is passed through the solutions of `AlCl_3, AgNO_3` and `MgSO_4`, in what ratio Al, Ag and Mg will be deposited at the electrodes?

A

3 : 6 : 2

B

`2:6:3`

C

`1:2:3`

D

`3:2:1`

Text Solution

Verified by Experts

The correct Answer is:
B
`eq_(Al) = eq_(Ag) = eq_(Mg)`
eq = moles `xx` n-factor
`Al^(+3) + 3e^(-) to Al`
`Ag^+ + e^(-) to Ag`
`Mg^(+2) + 2e^(-) to Mg`
`1/3 ` mol Al : 1 mol : `1/2 mol Mg
or 2:6:3
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