
химия
Quiz
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Chemistry
•
University
•
Medium
Yuki Orikasa
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51 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Из перечисленных ниже реакций определите реакцию диспропорционирования
S + 2HNO3(конц) = H2SO4 + 2NO↑
Mg + S = MgS
2H2O2 = 2H2O+ O2↑
6KOH + 3S = K2SO3 + 2K2S +3H2O
Cu + 4HNO3 = Cu(NO3)2 + 2NO2 + 2H2O
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
2 Свойства Н2О2 – в реакции CrCI3 + H2O2 + NaOH→Na2CrO4 + H2O + NaCI
как растворитель
создает среду
как окислитель
как восстановитель
в качестве катализатора
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
3 Продукты окисления этилена перманганатом калия в нейтральной среде:
HOCH2CH2OH + MnO2↓+ KOH
CH3CH2OH + K2MnO4
CH3CH2OH + MnO2↓+ KOH
CH3COOK + Mn(CH3COO)2
HOH2C- CHOH-CH2OH + MnO2+ KOH
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Нитрат какого элемента разлагается по указанной схеме: 2МеNO3 →600 M2O + 2NO2 + ½O2
Li
Na
K
Rb
Cs
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
.Какое вещество образуется при добавлении дигидроантимоната калия, который используется для открытия иона натрия:
K2HSbO4
K2Na2SbO4
Na3SbO4
NaH2SbO4
Na2HSbO4
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
В какой цвет окрашивают пламя ионы калия
желтый
белый
синий
зеленый *
* фиолетовы
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Формула глауберовой соли, дающей и слабительное при отравлении солями свинца
CaSO4•2H2O
CuSO4•5 H2O
MgSO4•7 H2O
FeSO4•7 H2O
Na2SO4•10H2O
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