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一、考查溶液概念例1(2013·佛山)以下说法正确的是()。A.溶液一定是均一、无色、稳定的B.均一、稳定的液体一定是溶液C.溶液中的溶质一定是固体D.溶液一定足混合物研析与解答:溶液是一种均一、稳定的混合物,但不一定无色,如硫酸铜溶液是蓝色溶液;而均一、稳定的液体不一定是溶液,如纯净水、酒精;溶液中的溶质可以是固体,也可以是气体或液体。答案:D例2(2013·沈阳)20℃时,向甲烧杯中加入50g水和25g固体A,向乙烧杯中加入25g水和25g固体B(A、B两种物质均不与水反应)。充分搅拌后,甲
First, test solution concept Example 1 (2013 · Foshan) The following statement is correct (). A. The solution must be uniform, colorless, stable B. Uniform, stable liquid must be solution C. Solute in solution must be solid D. Solution must be enough mixture Analysis and Solution: The solution is a homogeneous and stable The mixture, but not necessarily colorless, such as copper sulfate solution is blue solution; and uniform, stable liquid is not necessarily a solution, such as purified water, alcohol; Solute in solution can be solid, it can be gas or liquid. Answer: D Example 2 (2013 · Shenyang) Add 50g of water and 25g of solid A to a beaker and add 25g of water and 25g of solid B to the beaker. (A and B do not react with water) at 20 ℃. . After mixing, a