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Question

The conductivity of an aqueous solution of a weak monoprotic acid is 0.000033 ohm1 cm1 at a concentration, 0.2M. If at this concentration the degree of dissociation is 0.015, calculate the value of λ0 (ohm1 cm2 /eqt).

A
11
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B
10
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C
12
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D
20
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Solution

The correct option is A 11
We know,

Λ=1000κC
Λ=1000×0.0000330.2=0.165
Again,

α=ΛΛ0
0.015=0.165Λ0
Λ0=0.1650.015=11 ohm1 cm2 eqt

Option A is correct.

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