Molar conductance Lambda_m is plotted against | vedclass

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(B) The molar conductance $\Lambda_m$ of strong electrolytes like $HCl$ and $NaCl$ increases linearly with a decrease in $\sqrt{c}$ according to the K

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$1-HCl, 2-NaCl, 3-NH_4OH$

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(B) The molar conductance $\Lambda_m$ of strong electrolytes like $HCl$ and $NaCl$ increases linearly with a decrease in $\sqrt{c}$ according to the Kohlrausch equation: $\Lambda_m = \Lambda_m^0 - A\sqrt{c}$.Since $H^+$ ions have a much higher ionic mobility than $Na^+$ ions,the molar conductance of $HCl$ is higher than that of $NaCl$ at any given concentration.Therefore,curve $1$ corresponds to $HCl$ and curve $2$ corresponds to $NaCl$.$NH_4OH$ is a weak electrolyte,and its molar conductance increases sharply as concentration decreases (as $\sqrt{c} 	o 0$),which is represented by curve $3$.

Ion and $\lambda ^o / (S \ cm^2 \ mol^{-1})$	Ion and $\lambda ^o / (S \ cm^2 \ mol^{-1})$
$H^{+} : 349.6$	$OH^{-} : 199.1$
$Na^{+} : 50.1$	$Cl^{-} : 76.3$
$K^{+} : 73.5$	$Br^{-} : 78.1$
$Ca^{2+} : 119.0$	$CH_3COO^{-} : 40.9$
$Mg^{2+} : 106.0$	$SO_4^{2-} : 160.0$

Molar conductance $\Lambda_m$ is plotted against $\sqrt{c}$ $(mol^{1/2} \ L^{-1/2})$ for three electrolytes ($NaCl$,$HCl$,$NH_4OH$). Based on the provided graph,which of the following represents the correct identification of curves $1$,$2$,and $3$?

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