Ответ:
Объяснение:
1) BaO + 2HCl = BaCl2 + H2O
BaCl2 + H2SO4 = BaSO4↓ + 2HCl
2) Ca + 2H2O = Ca(OH)2 + H2↑
Ca(OH)2 + CO2 = CaCO3↓ + H2O
CaCO3 = CaO + CO2
CaO + 2HCl = CaCl2 + H2O
CaCl2 + Na2CO3 = CaCO3↓ + 2NaCl
3) CuO + H2SO4 = CuSO4 + H2O
CuSO4 + 2NaOH = Cu(OH)2↓ + Na2SO4
Cu(OH)2 = CuO + H2O
CuO + 2HCl = CuCl2 + H2O
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Answers & Comments
Ответ:
Объяснение:
1) BaO + 2HCl = BaCl2 + H2O
BaCl2 + H2SO4 = BaSO4↓ + 2HCl
2) Ca + 2H2O = Ca(OH)2 + H2↑
Ca(OH)2 + CO2 = CaCO3↓ + H2O
CaCO3 = CaO + CO2
CaO + 2HCl = CaCl2 + H2O
CaCl2 + Na2CO3 = CaCO3↓ + 2NaCl
3) CuO + H2SO4 = CuSO4 + H2O
CuSO4 + 2NaOH = Cu(OH)2↓ + Na2SO4
Cu(OH)2 = CuO + H2O
CuO + 2HCl = CuCl2 + H2O