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The ionic conductances of Al^(3+) and so...

The ionic conductances of `Al^(3+)` and `so_(4)^(2-)` at infinite dilution are x and y `ohm^(-1)` `cm^(2)` `mol^(-1)` respectively. If Kohlrausch law is valid, then molar conductance of aluminium sulphate at infinite dilution will be

A

3x + 2y

B

2x + 3y

C

2x + 2y

D

3x + 3y

Text Solution

Verified by Experts

The correct Answer is:
B
`AI_2(SO_4)_3hArr2AI^(3+)+3SO_4^(2-)`
`Lambda_(m AI_2(SO_4)_3)^@=2Lambda_(AI^(3+))^@+3Lambda_(SO_4^(2-))^@`
`Lambda_(m AI_2(SO_4)_3)^@=2x+3Y`
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