If A_2 B is 30 % ionised in an aqueous soluti | vedclass

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(D) For the dissociation of $A_2 B$: $A_2 B \rightarrow 2 A^{+} + B^{2-}$.Here,the number of ions produced per formula unit is $y = 3$.The degree of i

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$16$

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(D) For the dissociation of $A_2 B$: $A_2 B ightarrow 2 A^{+} + B^{2-}$.Here,the number of ions produced per formula unit is $y = 3$.The degree of ionisation is $\alpha = 30 \% = 0.3$.The van't Hoff factor $(i)$ is calculated using the formula: $i = 1 + (y - 1)\alpha$.Substituting the values: $i = 1 + (3 - 1)(0.3) = 1 + (2)(0.3) = 1 + 0.6 = 1.6$.Expressing $1.6$ in the form $............ 	imes 10^{-1}$,we get $16 	imes 10^{-1}$.Thus,the correct option is $D$.

If $A_2 B$ is $30 \%$ ionised in an aqueous solution,then the value of van't Hoff factor $(i)$ is $............ \times 10^{-1}$.

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