One ampere of current is passed for 9650...

One ampere of current is passed for 9650s through molten `AlCl_(3)`. What is the weight, in gram, of Al deposited at cathode?(atomic weight of Al =27)

A

0.9

B

9

C

0.09

D

90

Text Solution

Verified by Experts

The correct Answer is:

A

Time, t = 9650s, Atomic weight of aluminium (w) = 27, and Current (I) = 1A,
Equivalent weight of Al, `(e) = 27/9 = 9`
Electrochemical equivalent of Al,` (z) = e/96500= 9/96500`
`w=ZIt= 9/96500 xx1 xx 9650=0.9g`

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