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The molar conductivity of caption and an...

The molar conductivity of caption and anion of salt BA are 180 and 220 ohm^(-1) cm^(2) mol^(-1) respectively . The molar conductivity of salt BA at infinite dilution is -

A

90 ohm^(-1) cm^(2) mol^(-1)

B

`110 ohm^(-1) cm^(2) mol^(-1)

C

200 ohm^(-1) cm^(2) mol^(-1)`

D

400 ohm^(-1) cm^(2) mol^(-1)

Text Solution

Verified by Experts

The correct Answer is:
400 ohm^(-1) cm^(2) mol^(-1)
Molar conductivity of cation ` ^^_(o ("cation"))` = 180 mhos.
Molar conductivity of anion `^^_(o("anion"))` = 220 mhos.
Molar conductivity of salt `BA^^ _(o(BA))` = ?
By Kohlrausch's law , `^^_(o(BA)) = ^^_(o("cation")+^^_(o("anion"))`
` = 180 + 220 = 400 mhos`
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