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(B) The variation of molar conductivity $(\Lambda_m)$ with concentration $(C)$ for strong electrolytes is given by the Kohlrausch equation: $\Lambda_m

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Sodium acetate

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(B) The variation of molar conductivity $(\Lambda_m)$ with concentration $(C)$ for strong electrolytes is given by the Kohlrausch equation: $\Lambda_m = \Lambda_m^0 - A\sqrt{C}$.In this equation,$A$ is a constant,and the slope of the graph of $\Lambda_m$ versus $\sqrt{C}$ is $-A$,which is negative.Among the given options,$CH_3COONa$ (Sodium acetate) is a strong electrolyte,whereas $NH_4OH$,$CH_3COOH$,and $H_2O$ are weak electrolytes.Therefore,the graph for Sodium acetate shows a negative slope.

For which of the following electrolytes does the graph of $\Lambda_m$ vs $\sqrt{C}$ give a negative slope?

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