Question

Записать уравнения реакции и способ образования:
1) H2 = H2O = Ca(OH)2 = CaCO3 = CO2
2) Mg = MgO = Mg(NO3)2 = Mg(OH)2 = H2O

Answer 1

1) 2H2 + O2 = 2H2O

H2O + CaO = Ca(OH)2

Ca(OH)2 + Na2CO3 = CaCO3 + 2NaOH

CaCO3 (t)= CaO + CO2



2) 2Mg + O2 = 2MgO

MgO + 2HNO3 = Mg(NO3)2 + H2O

Mg(NO3)2 + 2KOH = Mg(OH)2 + 2KNO3

Mg(OH)2 (t)= MgO + H2O.