河南省实验中学2023-2024学年高三上学期期中考试 化学
河南省实验中学2023——2024学年上期期中试卷高三化学命题人:周庆审题人:范晓静(时间:90分钟,满分:100分)相对原子质量:H-1O-16Na-23P-31S-32Cl-35.5Fe-56Cu-64一、选择题:(每小题3分,16小题,共48分,每小题只有一个选项符合题意)1.下列叙述中,错误的是()A.固体氯化钠不能导电,但氯化钠是电解质B.纯水的pH值随温度的升高而降低C.pH=(为水的离子积常数)的溶液一定呈中性D.用大量水稀释溶液,溶液中所有离子浓度都要减小2.设NA为阿伏加德罗常数的值,下列说法错误的是()A.标准状况下,22.4LCl2通入足量的水充分反应,溶液中N(Cl-)...
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