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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)` respectively. If Kohlrausch law is valid then molar conductance of aluminium sulphate infinite dilution will be

A

`3 x+ 2y`

B

`2x+3y`

C

`2x +2y`

D

`3x +3y`

Text Solution

Verified by Experts

The correct Answer is:
B
`Al_(2)(SO_4)_3 hArr 2Al^(3+)+3SO_(4)^(2-)`
`Lambda_(m)^(@) Al_(2)(SO_4)_3 = 2 Lambda^(@)_(Al^(3+)) + 3 Lambda_(SO_(4)^(2-))^(@)`
`Lambda_(m)^(@) Al_(2)(SO_4)_3 = 2x + 3y`
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