13. VA族元素:氮和磷
Quiz
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Chemistry
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10th Grade
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Practice Problem
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9 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
镁带可在氮气中燃烧而生成一灰绿色的化合物。当水加入时,所释出的气体是_____。
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
当二氧化氮与水反应时,二氧化氮_____。
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列哪一种试剂可用来区别溴蒸气和二氧化氮?
BaCl2溶液
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列哪些反应会生成二氧化氮?
I 加热铜屑与稀硝酸
II 加热硝酸铵
III 加热硝酸铅
IV 加热浓硝酸
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列哪项是氨极易跟酸化合的原因?
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列哪种盐加热时不会释放气体?
NH4Cl
Na2CO3
CaCO3
NH4NO3
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列哪一种试剂可用来区别Al2(SO4)3(aq)、NaCl(aq)、(NH4)2CO3(aq)和Mg(NO3)2(aq)?
BaCl2(aq)
AgNO3(aq)
8.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
固体的化铵和氯化钠混合在一起,可以用下列哪种方法分离?
9.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列哪些铵盐加热不会释放出氨气?
I NH4NO2
II NH4NO3
III (NH4)2SO4
IV (NH4)2CO3
V (NH4)2Cr2O7
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