【題目】學習溶液后，甲、乙、丙、丁四位同學討論對溶液的理解，其中正確的是（ ）

A.甲：40mL酒精跟60mL水混合一定得到100mL溶液

B.乙：1克蔗糖在10克水中完全溶解，所得溶液的質(zhì)量為11克

C.丙：鹽水是溶液，糖水是溶液，兩者混在一起，既有糖又有鹽，則不是溶液

D.丁：CaO溶于水形成澄清石灰水，其溶質(zhì)是CaO，水是溶劑

【答案】B

【解析】

試題分析：A.酒精和水的分子間的間隔不同，當酒精和水混合后，分子相互嵌入，使混合后溶液的總體積小于兩者的分體積之和，A錯誤；B.溶液質(zhì)量=溶質(zhì)質(zhì)量+溶劑質(zhì)量，因1克蔗糖完全溶解于10克水中，故正確；C,一種溶劑里可溶解多種溶質(zhì)，所以，鹽水和糖水溶液混合后仍然是溶液，其中食鹽和糖是溶質(zhì)，水是溶劑，故C錯誤；D.氧化鈣溶于水和水反應(yīng)生成氫氧化鈣，因此，澄清的石灰水中溶質(zhì)是氫氧化鈣，溶劑是水，D錯誤。故選B

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