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Which of the following solutions has lar...

Which of the following solutions has larger molar conductance ?
(a) 0.08 M solution having conductivity equal to `2.0xx10^(-2)ohm^(-1)cm^(-1)`.
(b) 0.10 M solution having resitivity equal to 58 ohm cm.

Text Solution

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The correct Answer is:
solution (a)
(a)`" " Lambda_(M)=(1000xxk)/(M)=((1000" cm"^(3))xx(2.0xx10^(-2)" ohm"^(-1)cm^(-1)))/((0.08" mol"))=250" ohm"^(-1)cm^(2)"mol"^(-1)`.
(b)`" " Lambda_(M)=(1000xxk)/(M)=(1000)/(pxxM)=((1000cm^(3)))/((58" ohm cm")xx(0.1 "mol"))=172.41" ohm"^(-1)cm^(2)"mol"^(-1)`.
Solution (a) has larger molar conductance than solution (b).
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