The molar conductivities of KCl,NaCl,and KNO_ | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) According to Kohlrausch's law of independent migration of ions:$\Lambda^o_{KCl} = \Lambda^o_{K^+} + \Lambda^o_{Cl^-} = 152 \ S \ cm^2 \ mol^{-1}$$

Vedclass · Accepted Answer

$87$

Vedclass · Answer

(B) According to Kohlrausch's law of independent migration of ions:$\Lambda^o_{KCl} = \Lambda^o_{K^+} + \Lambda^o_{Cl^-} = 152 \ S \ cm^2 \ mol^{-1}$$\Lambda^o_{NaCl} = \Lambda^o_{Na^+} + \Lambda^o_{Cl^-} = 128 \ S \ cm^2 \ mol^{-1}$$\Lambda^o_{KNO_3} = \Lambda^o_{K^+} + \Lambda^o_{NO_3^-} = 111 \ S \ cm^2 \ mol^{-1}$To find $\Lambda^o_{NaNO_3}$,we use the expression:$\Lambda^o_{NaNO_3} = \Lambda^o_{NaCl} + \Lambda^o_{KNO_3} - \Lambda^o_{KCl}$$\Lambda^o_{NaNO_3} = 128 + 111 - 152$$\Lambda^o_{NaNO_3} = 87 \ S \ cm^2 \ mol^{-1}$

The molar conductivities of $KCl$,$NaCl$,and $KNO_3$ are $152$,$128$,and $111 \ S \ cm^2 \ mol^{-1}$ respectively. The molar conductivity of $NaNO_3$ is ............. $S \ cm^2 \ mol^{-1}$.

Similar Questions

At a particular temperature,the ratio of molar conductance to specific conductance of $0.01 \ M$ $NaCl$ solution is

The limiting molar conductivities $\lambda^{0}$ for $NaCl$,$KBr$,and $KCl$ are $126$,$152$,and $150 \ S \ cm^{2} \ mol^{-1}$ respectively. What is the $\lambda^{0}$ for $NaBr$ in $S \ cm^{2} \ mol^{-1}$?

The electrodes of a conductivity cell are $3 \text{ cm}$ apart and have a cross-sectional area of $4 \text{ cm}^2$. The cell constant of the cell (in $\text{cm}^{-1}$) is

What is the molar conductivity at infinite dilution of $CaCl_{2}$,if the molar conductivity of $Ca^{2+}$ ion and $Cl^{-}$ ion at infinite dilution is $119$ and $71 \ \Omega^{-1} \ cm^{2} \ mol^{-1}$ respectively?

Assertion: Electrical conductivity of copper increases with increase in temperature.
Reason: The electrical conductivity of metals is due to the motion of electrons.

Vedclass Test Series

Exam Paper Generator

Online Exam Module