初三化学练习(酸碱盐)
初三化学练习(酸碱盐) 考试时间为60分钟
江苏江阴高级中学初中部 高云瑾 班级 姓名
可能用到的相对原子质量:H-1 Ca-40 Cl-35.5 C-12 O-16 Ba-137 Na-23 一、选择题:
1、下列变化或操作一定发生化学变化的是 ································································( ) (A)粗盐提纯
(B)酸溶液或碱溶液使指示剂变色
(C)敞口放置浓硫酸 (D)配制生理盐水
2、下列关于化学反应类型的叙述正确的是 ································································(
(A)复分解反应一定没有单质参加
(B)生成一种单质和一种化合物的反应一定是置换反应 (C)分解反应的生成物一定有单质 (D)凡生成盐和水的反应都是中和反应
3、下列物质中与硝酸钾、硫酸铜可归为同一类化合物的是 ······································(
(A)生石灰
(B)食盐溶液
(C)纯碱
(D)冰水
4、根据你所做过的家庭小实验,下列各项能够导电的是 ( )
①食盐溶液 ②碳酸钠溶液 ③酒精溶液 ④糖水 (A)①② (B)②④ (C)①③ (D)③④
5、下列各组物质的溶液混合后,能在水中大量共存的是··········································(
(A)Na2CO3和CaCl2 (B)CaCl2和NaNO3 (C)NaOH和HCl
(D)MgCl2和NaOH
6、下列物质既能与水反应,又能与盐酸反应的是 ·····················································(
(A)CO2
(B)CaO
(C)CaCl2
(D)CaCO3
7、在一定条件下,下列转化不能一步实现的是 ························································(
(A)CO2→CaCO3
(B)HCl→NaCl
(C)Fe→FeSO4
(D)Fe→Fe2(SO4)3
8、可溶性钡盐有毒。既不溶于水,又不溶于酸的硫酸钡不但对人体无毒,还由于它不易被X射线透过,被医疗上作为X射线透视胃肠的内服药一“钡餐”。若误食了溶于水的BaCl2 可用于解毒的药剂是 ······························································································· ( (A)硫酸 (B)食盐水 (C)硫酸钠溶液 (D)碳酸钠溶液
9、如右图所示的密封装置,先调节天平平衡,经过一段时间,出现的情况是 ·············· ( (A)指针偏左,食盐溶液一定变浓,烧碱变质 (B)指针偏右,食盐溶液一定饱和,烧碱溶解 (C)指针偏左,食盐溶液一定变浓,烧碱潮解
(D)指针偏右,食盐溶液一定变浓,烧碱潮解
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