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Standard XII

Chemistry

Conductance and Conductivity

A conductivit...

Question

A conductivity cell filled with 0.01M $K C l$ gives at 25°C the resistance of 604 ohms. The conductivity of $K C I$ at 25°C is
$0.00141$ $2 -$ $c m^{- 1}$ .
The same cell filled with $40.001 M$ $A g N O_{3}$ gives resistance of 6529 ohms. Calculate the molar conductivity of $0.001 M$ $A g N O_{3}$ solution at 25°C ?

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Solution

$\frac{σ}{c o n c}$ = $\frac{c e l l c o n s t}{R}$
$0.00141 \times 604 = 6529 \times x$
$x$ is specific conducters
$x$ = 0.000130
molar conductivity = $\frac{0.000130}{0.001}$
$0.13$ answer

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A conductivity cell filled with 0.01M KCl gives at 25°C the resistance of 604 ohms. The conductivity of KCI at 25°C is 0.00141 2− cm−1. The same cell filled with 40.001M AgNO3 gives resistance of 6529 ohms. Calculate the molar conductivity of 0.001M AgNO3 solution at 25°C ?

σconc = cellconstR0.00141×604=6529×xx is specific conducters x = 0.000130molar conductivity = 0.0001300.0010.13 answer

$\frac{σ}{c o n c}$ = $\frac{c e l l c o n s t}{R}$
$0.00141 \times 604 = 6529 \times x$
$x$ is specific conducters
$x$ = 0.000130
molar conductivity = $\frac{0.000130}{0.001}$
$0.13$ answer