第1个回答 2014-10-28
【答】:
(1)CaCO3 + 2HCl = CaCl2 + H2O + CO2↑ ;
CaCO3 + 2H+ = Ca2+ + H2O + CO2↑
(2)CH3COOH + NaOH = CH3COONa + H2O;
CH3COOH + OH- = CH3COO- + H2O
(3)Ba(OH)2 + CuSO4 = BaSO4↓ + Cu(OH)2↓;
Ba2+ + 2OH- + Cu2+ + SO42- = BaSO4↓ + Cu(OH)2↓
(4)Zn + 2HCl = ZnCl2 + H2↑;
Zn + 2H+ = Zn2+ + H2↑
(5)Ca(OH)2 + CO2 = CaCO3↓ + H2O;
Ca2+ + 2OH- + CO2 = CaCO3↓ + H2O