下列反应的离子方程式正确的是
A.NaHCO3溶液与盐酸:CO32− + 2 H+ = H2O + CO2↑ |
B.硝酸银溶液与铜:Cu + Ag+ = Cu2++ Ag |
C.金属钾与水反应: K +H2O=K+ +OH-+ H2↑ |
D.用醋酸除水垢:2CH3COOH + CaCO3 = Ca2+ + 2CH3COO− + H2O + CO2↑ |
下列反应的离子方程式正确的是
A.NaHCO3溶液与盐酸:CO32− + 2 H+ = H2O + CO2↑ |
B.硝酸银溶液与铜:Cu + Ag+ = Cu2++ Ag |
C.金属钾与水反应: K +H2O=K+ +OH-+ H2↑ |
D.用醋酸除水垢:2CH3COOH + CaCO3 = Ca2+ + 2CH3COO− + H2O + CO2↑ |