1.综合题- (共2题)
(1)汽车排放的尾气中含NO,生成NO的反应的化学方程式为 。
(2)采取还原法,用炭粉可将氮氧化物还原。
已知: N2(g)+O2(g)=2NO(g) ΔH=+180.6 kJ·mol-1
C(s)+O2(g)=CO2(g) ΔH=-393.5 kJ·mol-1
则反应 C(s)+2NO(g)=CO2(g)+N2(g) ΔH=________kJ·mol-1。
(3)将NO2变成无害的N2要找到适合的物质G与适当的反应条件,G应为 (填写“氧化剂”或“还原剂”)。下式中X必须为无污染的物质,系数n可以为0。
NO2+ G

下列化合物中,满足上述反应式中的G是 (填写字母)。
a.NH3b.CO2c.SO2d.CH3CH2OH
(4)治理水中硝酸盐污染的方法是:
①催化反硝化法中,用H2将NO3-还原为N2,一段时间后,溶液的碱性明显增强。则反应的离子方程式为: 。
②在酸性条件下,电化学降解NO3-的原理如下图,电源正极为: (选填“A”或“B”),阴极反应式为: 。


依据上图完成下列问题:
在电解过程中,阴极上生成气体的电子式为 。
(2)精制过程中除去阳离子中的Ca2+、Mg2+等杂质,除去Mg2+的离子方程式为 。
(3)精制过程要除去

a.Ba(OH)2b.Ba(NO3)2c.BaCl2
(4)在实际生产中也可以用BaCO3除去

(5)脱盐工作中,利用NaOH和NaCl在溶解度上的差异,通过蒸发、冷却、 、(填操作名称)而制得50%的NaOH溶液。
2.选择题- (共2题)
A.It is the capital of Japan.You can see a lot of tall buildings there.A lot of tourists enjoy shopping in Tokyo.People in Tokyo love eating sushi.
B.It is the capital of China.You can find museums,palaces and parks there.Most tourists like visiting these places.They like visiting the Great Wall too.People in Beijing love eating dumplings.
C.It is the capital of the UK.You can find many museums there.People in London love eating fish and chips.
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A.It is the capital of Japan.You can see a lot of tall buildings there.A lot of tourists enjoy shopping in Tokyo.People in Tokyo love eating sushi.
B.It is the capital of China.You can find museums,palaces and parks there.Most tourists like visiting these places.They like visiting the Great Wall too.People in Beijing love eating dumplings.
C.It is the capital of the UK.You can find many museums there.People in London love eating fish and chips.
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{#blank#}3{#/blank#}
3.单选题- (共1题)
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【1】题量占比
综合题:(2道)
选择题:(2道)
单选题:(1道)
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【2】:难度分析
1星难题:0
2星难题:0
3星难题:0
4星难题:0
5星难题:0
6星难题:3
7星难题:0
8星难题:0
9星难题:0