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基本操作 · 历年高考化学真题与解析

本页汇总 高考真题检索 的「基本操作」高考化学真题共 2 道,覆盖 2011–2020 年,最常出题型为 单选题;含完整答案与解析。

2questions
Past questions included
2011–2020
Years covered
区分题为主
Overall difficulty
Single-choice
Most common question type
Practice This Topic Do 5 reliable past questions first, then see the answers and explanations after you submit
常见易错点实验操作顺序颠倒溶液体积变化忽略

Past Question List

2020 Shandong Gaokao Single choice Differentiating Question 8 2020_山东卷 (化学)

8. 实验室分离 Fe3+和 Al3+的流程如下:
知 Fe3+在浓盐酸中生成黄色配离子[FeCl4]-,该配离子在乙醚(Et2O,沸点 34.6℃)中生成缔合物
+ -2 4Et O H FeCl﹒ ﹒[] 。下列说法错误的是

A. 萃取振荡时,分液漏斗下口应倾斜向下
B. 分液时,应先将下层液体由分液漏斗下口放出
C. 分液后水相为无色,说明已达到分离目的
D. 蒸馏时选用直形冷凝管
2011 Jiangsu Gaokao Single choice Differentiating Question 7 2011_江苏卷 (化学)

7. (3分)下列有关实验原理或实验操作正确的是(  )

A. 用水湿润pH试纸测量某溶液的pH
B. 用量筒量取20mL0.5000mol•L﹣1H2SO4 溶液于烧杯中,加水80mL,配制成0.1000mol •L﹣1H2SO4 溶液
C. 实验室用图所示装置制取少量氨气
D. 实验室用图所示装置出去Cl 2 中的少量HCl

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