湖北省黄冈市部分普通高中2023-2024学年高三上学期期中考试 化学答案
12023年秋季黄冈市部分普通高中高三年级阶段性教学质量检测化学参考答案一、选择题(本题共15小题,每小题3分,共45分,每题只有一个选项符合题意)题号123456789101112131415答案CBDCABDDABACCBD二、非选择题(本题共4小题,共55分)16.(13分)(1)饱和食盐水(1分)MnO2+4H++2Cl-=====Mn2++Cl2↑+2H2O(2分)(2)C(2分)防止氯气在较低温度下与KOH反应生成KClO,降低KClO3的产率(答到“生成KClO”即给分)(2分)(3)装置C试管液面上方出现黄绿色气体(或“装置D内溶液呈浅黄绿色”)(2分)(4)蒸发浓缩、冷却结晶...
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