Looking for classes? Ksquare Career Institute, Bengaluru →
Molar conductivity
Appears in
Concepts tested here
- Degree of ionisation
- molar-conductivity-calculation
All Questions
2016 Phase II 1 question
-
The molar conductivity of a 0.5 mol/$dm^3$ solution of $AgNO_3$ with electrolytic conductivity of $5.76 \times 10^{-3}\ S\ cm^{-1}$ at 298 K is
$\Lambda_m = 1000\kappa/C$.
C = 0.5 mol/$dm^3$, $\kappa = 5.76\times10^{-3}\ S\ cm^{-1}$, T = 298 K
$\lambda_m = \frac{\kappa\times1000}{M} = \frac{5.76\times10^{-3}\times1000}{0.5} = 11.52\ S\ cm^2/mol$
2013 NEET 1 question
-
At $25^\circ C$ molar conductance of 0.1 molar aqueous solution of ammonium hydroxide is 9.54 $ohm^{-1}cm^2mol^{-1}$ and at infinite dilution its molar conductance is 238 $ohm^{-1}cm^2mol^{-1}$. The degree of ionisation of ammonium hydroxide at the same concentration and temperature is:$\%\alpha = \frac{\Lambda_m^c}{\Lambda_m^\infty}\times100 = \frac{9.54}{238}\times100 = 4.008\%$