Calculate the molar conductivity of $CH_2ClCOOH$ at zero concentration if molar conductivities of $HCl$,$KCl$,and $CH_2ClCOOK$ at zero concentration are $4.2$,$1.4$,and $1.1 \ \Omega^{-1} \ cm^2 \ mol^{-1}$ respectively.
- A$3.9 \ \Omega^{-1} \ cm^2 \ mol^{-1}$
- B$4.5 \ \Omega^{-1} \ cm^2 \ mol^{-1}$
- C$6.6 \ \Omega^{-1} \ cm^2 \ mol^{-1}$
- D$1.7 \ \Omega^{-1} \ cm^2 \ mol^{-1}$
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Calculate $\Lambda _m^o$ for $CaCl_2$ and $MgSO_4$ from the data given in the table below:
Ion and $\lambda ^o / (S \ cm^2 \ mol^{-1})$ Ion and $\lambda ^o / (S \ cm^2 \ mol^{-1})$ $H^{+} : 349.6$ $OH^{-} : 199.1$ $Na^{+} : 50.1$ $Cl^{-} : 76.3$ $K^{+} : 73.5$ $Br^{-} : 78.1$ $Ca^{2+} : 119.0$ $CH_3COO^{-} : 40.9$ $Mg^{2+} : 106.0$ $SO_4^{2-} : 160.0$
| Ion and $\lambda ^o / (S \ cm^2 \ mol^{-1})$ | Ion and $\lambda ^o / (S \ cm^2 \ mol^{-1})$ |
|---|---|
| $H^{+} : 349.6$ | $OH^{-} : 199.1$ |
| $Na^{+} : 50.1$ | $Cl^{-} : 76.3$ |
| $K^{+} : 73.5$ | $Br^{-} : 78.1$ |
| $Ca^{2+} : 119.0$ | $CH_3COO^{-} : 40.9$ |
| $Mg^{2+} : 106.0$ | $SO_4^{2-} : 160.0$ |
Medium
View SolutionThe molar conductivities at infinite dilution for $AgNO_3$,$AgCl$,and $NaCl$ are $116.5$,$121.6$,and $110.3 \ S \ cm^2 \ mol^{-1}$ respectively. The molar conductivity of $NaNO_3$ is...
Medium
View Solution$A$ conductivity cell has been calibrated with $0.01 \ M$ $1:1$ electrolyte solution (specific conductance, $k = 1.25 \times 10^{-3} \ S \ cm^{-1}$) in the cell and the measured resistance was $800 \ \Omega$ at $25^{\circ}C$. The cell constant will be (in $cm^{-1}$)
MediumWBJEE 2013
View SolutionAt $298 \text{ K}$, the specific conductance $(\kappa)$ of a $0.0020 \text{ M}$ $NaCl$ solution is $2.50 \times 10^{-4} \text{ S cm}^{-1}$. Calculate the molar conductivity $(\Lambda_m)$ of the solution in $\text{S cm}^2 \text{mol}^{-1}$.
DifficultMHT CET 2026
View SolutionThe equivalent conductance of $H_2SO_4$ at infinite dilution is $384 \, \Omega^{-1} \, cm^2 \, eq^{-1}$. If the solution contains $49 \, g$ of $H_2SO_4$ per liter and the specific conductance is $18.4 \, \Omega^{-1} \, cm^{-1}$,calculate the degree of dissociation in percentage.
Difficult
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