First slide

Conductivity , Molar conductivity and Equivalent Conductivity

Question

Statement–I: 0.1 M $HCl$ is a better conductor than 0.1 M $NaCl$
Statement-II: Molar conductance of ${CH}_{3} COOH$ increases with increase in dilution.

Moderate

A

Statements I and II are correct
B

Statement I is correct and statement II is incorrect
C

Statement I is incorrect and statement II is correct
D

Statements I and II are incorrect

Solution

(I) Ionic mobility of $H^{+}$ > Ionic mobility of ${Na}^{+}$
$∴$         Ionic conductance of $H^{+}$ > Ionic conductance of ${Na}^{+}$
$∴$          Conductivity of 0.1 M HCl > 0.1 M NaCl.
(II) on dilution, ionization of weak electrolyte ( ${CH}_{3} COOH$ ) increases
$∴$          molar conductance increases.

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