If a compound \( \mathrm{AB} \) dissociates to the extent of \( 75 \% \) in an aqueous solution,...

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If a compound \( \mathrm{AB} \) dissociates to the extent of \( 75 \% \) in an aqueous solution, the molality of the solution which shows a \( 2.5 \mathrm{~K} \) rise in the boiling point of the solution, is molal. (Rounded-off to the nearest integer) \( \left[\mathrm{K}_{\mathrm{b}}=0.52 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}\right] \)
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