
Химия 4
Authored by Нигина Акрамходжаева
Chemistry
University
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30 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Сколько ионов образуется при диссоциации двух молекул FeCI?
4
10
8
5
9
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Какие вещества в ионном уравнении следующей реакции записываются в виде
молекул: H,S+Pb(NOs)2=PbS1+2HNOs?
A.HS
Pb(NO3)2
HO
HNO,
HPb
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Как называется следующий процесс и сколько электронов в нем участвует S+6-S-2?
окисление, 4е
восстановление, 8е
окисление, Se
восстановление, 4е
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Какие из следующих электронов при диссоциации образуют гидроксидные ионы?
H2SO4
Al, (SO4)3
Ca(HCO3)2
Sn(OH)2
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
5.В растворах, каких солей метилоранж имеет красный цвет?
NaCI
Zn(NO3)2
KCI
KCO,
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Какая кислота может образоваться при взаимодействии оксида фосфора (V) с водой?
H3PO4
HPO2
H3PO3
HPO3
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Какие из следующих веществ не растворяются в воде?
HNO3
Cu(OH)2
Zn(NO3)2
KNO3
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