6. 步骤④中除去的物质 a是A. 硝酸钠 B. 氨 C. 硝酸钾 D. 硝酸
氨与铵盐 · 历年高考化学真题与解析
本页汇总 高考真题检索 的「氨与铵盐」高考化学真题共 3 道，覆盖 2013–2026 年，最常出题型为 单选题；含完整答案与解析。
3questions
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2013–2026
Years covered
区分题为主
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Single-choice
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14. 某同学进行如下实验：
实验步骤 实验现象
I 将NH4Cl固体加入试管中，并将湿润的pH试纸置于试管口，试管口略向下倾斜，对试管底部进行加热 试纸颜色变化：黄色→蓝色(pH≈10)→黄色→红色(pH≈2)；试管中部有白色固体附着
II 将饱和NH4Cl溶液滴在pH试纸上 试纸颜色变化：黄色→橙黄色(pH≈5)
下列说法不正确的是
4． （2分）下列有关物质性质的应用正确的是（ ）
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