JEE MAIN - Chemistry (2023 - 29th January Morning Shift - No. 16)
Following figure shows dependence of molar conductance of two electrolytes on concentration. $$\Lambda \mathop m\limits^o $$ is the limiting molar conductivity.
The number of $$\mathrm{\underline {incorrect} }$$ statement(s) from the following is ___________
(A) $$\Lambda \mathop m\limits^o $$ for electrolyte A is obtained by extrapolation
(B) For electrolyte B, $$\Lambda \mathop m\limits $$ vs $$\sqrt c$$ graph is a straight line with intercept equal to $$\Lambda \mathop m\limits^o $$
(C) At infinite dilution, the value of degree of dissociation approaches zero for electrolyte B.
(D) $$\Lambda \mathop m\limits^o $$ for any electrolyte A and B can be calculated using $$\lambda^\circ$$ for individual ions
Answer
2
Explanation
(A) $\Lambda_{\mathrm{m}}^{\circ}$ for 'A' cannot be obtained by extra polation.
(C) At infinite dilution, value of degree of dissociation approaches one.
$\therefore \mathrm{A}$ and $\mathrm{C}$ are incorrect
(C) At infinite dilution, value of degree of dissociation approaches one.
$\therefore \mathrm{A}$ and $\mathrm{C}$ are incorrect
Comments (0)
