
Химические свойства и реакции

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Dias Kampit
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60 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Амфотерные свойства проявляет:
Zn
P
Ca
Ba
Si
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Верная реакция:
AlCl3+3NaOH=Al(OH)3+3NaCl
P+H2O=H3PO4
Cu+HCl=CuCl2+H2
Cu+H2SO4(разб)=CuSO4+H2
KCl+NaOH=NaCl+KOH↓
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Неверная реакция:
Cu+H2SO4(разб)=CuSO4+H2
BaCl2+H2SO4=BaSO4+2HCl
KOH+HCl=KCl+H2O
Cu+HNO3=Cu(NO3)2+H2O+NO2
Zn(NO3)2+KOH=Zn(OH)2+KNO3
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Сера является:
неметаллом
металлом
газом
амфотерным элементом
газообразным веществом
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Соединение состава HNO2 - это:
одноосновная кислота
бинарное соединение
многоосновная кислота
щелочь
основание
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Масса гидроксида натрия, содержащаяся в 300 мл 10%-ного раствора (ρ=1,2) равна:
36
24
12
48
66
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Для приготовления 500г 10%-ного раствора сульфита натрия необходимо взять Na2SO3 (г):
50
6,3
30
25
7,5
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