
неорг 2 тема (31-45)
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
С каким из указанных веществ реагирует концентрированная HNO3 при обычных условиях?
NaOH
PbSO4
Cr
Fe
Si
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
С какими из указанных веществ взаимодействует оксид азота (VI) с образованием только нитрата натрия и воды?
NaOH
Na2S
Na2SO4
NaOH, O2
Na2O
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
В каких из указанных реакции азот играет роль восстановителя?
N2 + O2 = 2NO
N2+3Ca=Ca3N2
6H+N2=2H3N
N2+3H2=2NH3
2Al+N2=2AlN
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Какой газ выделяется при взаимодействии оксида фосфора (III) с водой?
H3PO4
H2P2O7
HPO4
H3PO3
HPO3
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Какой осадок образуется при взаимодействии растворов солей Na3PO4 и Ca(NO3)2?
NaNO3
Ca(OH)2
Ca3(PO4)2
Na2HPO4
CaPO4
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
В каком из указанных реакций являются качественными реакциями на ион аммония NH4?
NH4NO2=N2+2H2O
4NH3+3O2=2N2+6H2O
2NH4Cl+Ca(OH)2=2NH3+2H2O+CaCl2
2NH3+H2SO4=(NH4)2SO4
N2+3H2=2NH3
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Отметьте вещество, с которым реагирует хлор:
NaO2
Fe(OH)3
F
P
O2
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