問題詳情
63. 將 20.0g 的未知有機物溶於 500 g 的苯，所成的溶液凝固點為 3.77 ℃。已知苯的凝固點為 5.48 ℃，莫耳凝固點下降常數 Kf = 5.12 ℃/m。則此未知物的分子量為
(A) 60
(B) 120
(C) 180
(D) 240
(A) 60
(B) 120
(C) 180
(D) 240
參考答案
答案：B
難度：適中0.574468
統計：A(4),B(27),C(10),D(2),E(0)
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