Объяснение:
Сa + 2HCl = CaCl2 + H2
Ba(OH)2 + 2HCl = BaCl2 + 2H2O
Na2CO3 + 2HCl = 2NaCl + CO2 + H2O
CuO + 2HCl = CuCl2 + H2O
Объяснение:
Сa + 2HCl = CaCl2 + H2
Ba(OH)2 + 2HCl = BaCl2 + 2H2O
Na2CO3 + 2HCl = 2NaCl + CO2 + H2O
CuO + 2HCl = CuCl2 + H2O