JEE Main 2014 · 6 Apr · Shift 1 · Chemistry Q37

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ChemistrySingle correct+4 / -1Question 37 of 90

The equivalent conductance of NaCl at concentration C and at infinite dilution are $\lambda_C$ and $\lambda_\infty$ , respectively. The correct relationship between $\lambda_C$ and $\lambda_\infty$ is given as :

(where the constant B is positive)

\lambda_C=\lambda_\infty+(B)C

\lambda_C=\lambda_\infty-(B)C

\lambda_C=\lambda_\infty-(B)\sqrt C

\lambda_C=\lambda_\infty+(B)\sqrt C

Answer and worked solution

Official answer: C

For a strong electrolyte (Debye-Hückel-Onsager / Kohlrausch), conductance falls linearly with $\sqrt C$ :
$\lambda_C=\lambda_\infty-B\sqrt C.$

Topics:Conductance and Kohlrausch's law

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JEE Main 2014 · 6 Apr · Shift 1, Chemistry question 37