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一、选择 1.对于任何一个平衡体系,采取以下措施后,一定会使平衡移动的是 A.加入一种反应物 B.对平衡体系增加压强 C.升高温度 D.使用催化剂 2.下列各组溶液同时开始反应,最先出现浑浊的一组是(假设混和液体积为两溶液体积之和) A.20℃时20毫升0.5摩/升Na_2S_2O_3溶液和20毫升0.5摩/升H_2SO_4溶液混和 B.20℃时20毫升1.0摩/升Na_2S_2O_3溶液和20毫升0.5摩/升H_2SO_4溶液混和 C.40℃时20毫升0.5摩/升Na_2S_2O_3溶液和20毫升0.5摩/升H_2SO_4溶液混和
First, choose 1. For any equilibrium system, after taking the following measures, the balance move will be A. Add a reactant B. Increase the pressure on the equilibrium system C. Increase the temperature D. Use the catalyst 2. The following The group solution starts to react at the same time. The first group that appears turbid is (assuming that the volume of the mixed solution is the sum of the two solution volumes) A. 20 ml 0.5 ml/l Na 2 S 2 O 3 solution and 20 ml 0.5 m/l H 2 SO 4 solution mixed B At 20°C, mix 20 ml of 1.0 mol/l Na_2S_2O_3 solution and 20 ml of 0.5 mol/l H_2SO_4 solution, mix 20 ml of 0.5 mol/l Na_2S_2O_3 solution and 20 ml of 0.5 mol/l H_2SO_4 solution at 40°C.