在近地面空气中,某气体浓度稍大时是一种污染物,而在高空却对人类有保护作用。该气体为何物?
第十四章 :VIA族元素:氧和硫

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Chemistry
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10th Grade
•
Hard
wan hawl
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20 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
O3
NO
CO
CFC
2.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
下列有关元素周期表中IA族及IIA族元素的叙述,哪一项是正确的?
BeSO4可溶于水
Na2CO3不溶于水
MgCl2溶液是中性的
K2O与H2O反应释放出H2
3.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
下列哪项/哪些说法不正确?
Ⅰ 可以用无色试剂瓶贮放浓硝酸。
Ⅱ 可以用经氯气消毒后的自来水配制硝酸银溶液。
Ⅲ 可以用过氧化氢水溶液使变黑的油画整旧如新。
Ⅳ 存放镁条的仓库失火时,可以用二氧化碳灭火器扑灭。
Ⅰ
Ⅱ,Ⅲ
Ⅰ,Ⅱ,Ⅳ
Ⅰ,Ⅲ,Ⅳ
4.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
关于钠化合物的应用,下列哪项说法不合理?
碳酸氢钠可治疗胃酸过多。
发酵粉中含有碳酸氢钠,可使糕点膨松
氢氧化钠可以存放在玻璃塞的试剂瓶中。
过氧化钠可作为密闭环境中的氧气发生剂。
5.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
下列有关硫化氢的反应,哪些不是氧化还原反应?
Ⅰ 与溴水反应 Ⅱ 与二氧化硫反应
Ⅲ 与硝酸铜溶液反应 Ⅳ 与氢氧化钠溶液反应
Ⅰ,Ⅱ
Ⅰ,Ⅳ
Ⅱ,Ⅲ
Ⅲ,Ⅳ
6.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
将H2S气体通入不同浓度的硝酸溶液中,发生下列的反应:
依据以上化学方程式,硝酸溶液的氧化性的正确排列是________。
①<④<③<②
②<③<①<④
③<④<①<②
④<③<①<②
7.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
CI2(g)+H2S(g)→2HCI(g)+S(s)
SO2(g)+2H2S(g)→2H2O(I)+3S(s)
CI2(g)+2H2O(I)+SO2(g)→2HCI(aq)+H2SO4(aq)
依据以上化学方程式,CI2、H2S和SO2三种气体的还原性顺序排列是:
SO2<H2S<CI2
H2S<SO2<CI2
CI2<SO2<H2S
CI2<H2S<SO2
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