問題詳情
19.右圖為 18 g 非電解質溶解於200 g 水中所配成溶液的冷卻曲線，下列何者正確？ 
(A)此溶液冷卻 5 分鐘後開始凝固，其凝固點為－0.93 ℃
(B)圖中 P 點該溶液之重量莫耳濃度 Cm＝0.25 m
(C)圖中 Q 點該溶液之重量莫耳濃度 Cm＝1m
(D)該非電解質溶質之分子量為 90
(E)冷卻 15 分鐘後，共析出冰約 133.3克。
(A)此溶液冷卻 5 分鐘後開始凝固，其凝固點為－0.93 ℃
(B)圖中 P 點該溶液之重量莫耳濃度 Cm＝0.25 m
(C)圖中 Q 點該溶液之重量莫耳濃度 Cm＝1m
(D)該非電解質溶質之分子量為 90
(E)冷卻 15 分鐘後，共析出冰約 133.3克。
參考答案
答案：A,C,E
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0) #
個人：尚未作答 書單：沒有書單，新增
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