Ответ:
1. 2Ca+O2 = 2CaO
CaO +H2SO4 =CaSO4 + H2O
CaO + H2O = Ca(OH)2
Ca(OH)2 + H2SO4 = CaSO4 + 2H2O
Ca(OH)2 + HCl = CaCl2 + H2O
2. S + O2 = SO2
SO3 + H2 = H2SO4
K + O2 = K2O
K2O + H2O = 2KOH
H2SO4 + 2KOH = K2SO4 + 2H2O
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Ответ:
1. 2Ca+O2 = 2CaO
CaO +H2SO4 =CaSO4 + H2O
CaO + H2O = Ca(OH)2
Ca(OH)2 + H2SO4 = CaSO4 + 2H2O
Ca(OH)2 + HCl = CaCl2 + H2O
2. S + O2 = SO2
SO3 + H2 = H2SO4
K + O2 = K2O
K2O + H2O = 2KOH
H2SO4 + 2KOH = K2SO4 + 2H2O