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Three faraday of electricity is passed t...

Three faraday of electricity is passed through three electrolytic cells connected in series containing `Ag^(+), Ca^(2+) and Al^(+3)` ions respectively. The molar ratio in which the three metal ions are liberated at the electrodes is

A

`1:2:3`

B

`3:2:1`

C

`6:3:2`

D

`3:4:2`

Text Solution

Verified by Experts

The correct Answer is:
C
`Ag^(+)+e^(-)rarrAg`
`Ca^(2+)+2e^(-)rarrCa`
`Al^(3+)+3e^(-)rarrAl`
3 farad aya li berate 1 mol of Al, 3 moles of Ag and 3/2 moles of Cu. Thus, molar ratio of Ag:Cu: Al is 3:3/2 :1 or 6:3:2.
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