Which of the following weak electrolytes give | vedclass

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Question

(C) Let the weak electrolyte be $A_xB_y$. The dissociation reaction is: $A_xB_y \rightleftharpoons xA^{y+} + yB^{x-}$.For an initial concentration $C$

Vedclass · Accepted Answer

$AB_3$

Vedclass · Answer

(C) Let the weak electrolyte be $A_xB_y$. The dissociation reaction is: $A_xB_y ightleftharpoons xA^{y+} + yB^{x-}$.For an initial concentration $C$ and degree of dissociation $\alpha$,the concentration of the anion $B^{x-}$ is given by $y 	imes C 	imes \alpha$.We are given that the concentration of the anion is $3C\alpha$,which implies $y = 3$.Looking at the options:$A_3B$ gives $y=1$ (anion concentration $C\alpha$)$A_3B_2$ gives $y=2$ (anion concentration $2C\alpha$)$AB_3$ gives $y=3$ (anion concentration $3C\alpha$)$A_3B_4$ gives $y=4$ (anion concentration $4C\alpha$)Therefore,the correct electrolyte is $AB_3$.

Which of the following weak electrolytes gives a concentration of $3C\alpha$ for the anion in an aqueous solution?

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