1atm下，測得0.05m的一元弱酸水溶液凝固點為-0.105°C，求此弱酸的解離度約為若干%？（水的Kf=86°C /m）(A) 26%(B) 64%(C) 9%(D) 18

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2. 1atm下，測得0.05m的一元弱酸水溶液凝固點為-0.105°C，求此弱酸的解離度約為若干%？（水的Kf=1.86°C /m）
(A) 5.26%
(B) 8.64%
(C) 12.9%
(D) 18.6%

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