挑战习题
1/5单选题
难度:

1.下列关于氯水的叙述,正确的是
A 氯水中只含Cl2和HClO两种分子
B 新制氯水只能使蓝色石蕊试纸变红
C 光照氯水有气泡逸出,该气体主要是Cl2
D 氯水放置数天后其pH将变小,酸性增强
提示1:
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正确答案:RA==
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