Предмет: Химия, автор: Alina2456066

из приведенного перечня выпишите формулы 1.оксидов 2. кислот 3.оснований 4.солей: Ba(OH) 2, SO2, H2SO4, NaOH, CaCl2, Na2SO4, FeO, HCl.
напишите формулы соответствующие названиям: оксид углерода(4), гидроксид калия(1), фосфат натрия(1),хлорид алюминия(3).
составьте уравнения реакций получения оксида цинка двумя различными способами.
напишите уравнения реакцией с помощью которых можно осуществить следующие превращения: Ca= CaO=Ca(OH) 2=Ca(NO3)2.
какая масса гидроксида кальция (Ca(OH)2)образуется при взаимодействии 0,5 моль оксида кальция с водой?

Ответы

Автор ответа: amıka
0
1.Оксиды-FeO,SO2.
2.Кислоты-H2SO4,HCl.
3.Coль-CaCl,Ba(OH)2,NaSO4.
CO2,KOH,Na3PO4,AlCl2..
1)ZnO+H2SO4→ZnSO4+H2O
2ZnSO4+2H2O→2Zn+O2+2H2O(путем электролиза)
2)ZnO+C→Zn+CO
Ca=CaO=Ca(OH)2=Ca(NO3)2
1)Ca+O2→CaO2
2)CaO2+H2O→Ca(OH)2
Ca(OH)2+HNO3→CaNO3+2H2O
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