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1. 在均盛有 50 克水的三個燒杯甲、乙、丙中,分別加入 10 克、15 克、20 克的硫酸銅,經充分攪拌後,發現甲杯顏色最淡,而乙、丙二杯仍有固體沉澱,下列敘述何者正確?(A)甲杯是飽和溶液 (B
問題詳情
1. 在均盛有 50 克水的三個燒杯甲、乙、丙中,分別加入 10 克、15 克、20 克的硫酸銅,經充分攪拌後,發現甲杯顏色最淡,而乙、丙二杯仍有固體沉澱,下列敘述何者正確?
(A)甲杯是飽和溶液
(B)丙杯顏色最深
(C)乙、丙是過飽和溶液
(D)若升高溫度後,乙、丙二杯尚有固體沉澱,其濃度必相等
(E)再分別加入 5 克硫酸銅後,三杯顏色均變深
參考答案
答案:D
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