A.NH4Cl + NaOH =" NaCl" + NH3↑ + H2O | B.Mg(OH)2 + 2HCl = MgCl2 + 2H2O |
C.NaOH + NaHCO3 = Na2CO3 + H2O | D.NaOH + HNO3 = NaNO3 + H2O |
A.钠与水反应:Na+H2O=Na++OH-+H2↑ 20081014 | B.氯气与水反应:Cl2+H2O ![]() | C.过量的NaHSO4与Ba(OH)2溶液反应:Ba2++2OH-+2H++SO42-=BaSO4↓+2H2O |
D.用氯化铁溶液腐蚀电路板:Fe3++Cu=Fe2++Cu2+ |
A.稀硫酸滴在铜片上:Cu + 2H+= Cu2++H2↑ |
B.用小苏打治疗胃酸过多:HCO3-+ H+=H2O + CO2↑ |
C.硝酸滴在石灰石上:CaCO3+ 2H+= Ca2++H2CO3 |
D.醋酸钠和盐酸混和:CH3COONa +H+=CH3COOH + Na+ |
A.过氧化钠与水反应:O22−+ 2H2O = O2↑+ 4OH− |
B.将氯气通入氯化亚铁溶液中:Fe2+ + Cl2 = 2Cl− + Fe3+ |
C.氯气与水反应:Cl2+ H2O = 2H++ Cl−+ ClO− |
D.氨水中滴加盐酸:H+ + NH3·H2O = NH4+ + H2O |
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