In a \( 0.2 \)-molal aqueous solution of a weak acid \( H X \), the degree of ionization is 0.3....
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0In a \( 0.2 \)-molal aqueous solution of a weak acid \( H X \), the degree of ionization is 0.3. If \( K_{1} \) for water is \( 1.86 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1} \), the freezing point of the solution is nearly equal to
(A) \( -0.480^{\circ} \mathrm{C} \)
(B) \( -3.55^{\circ} \mathrm{C} \)
(C) \( -0.260^{\circ} \mathrm{C} \)
(D) \( 0.48^{\circ} \mathrm{C} \)
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