写出符合以下离子方程式的化学方程式各1个
(1)CO2+2OH-=CO32-+H2O __________________________________________
(2)HCO3-+H+=CO2↑+H2O _________________________________________
(3)CaCO3+2H+=Ca2++CO2↑+H20 _________________________________________
(4)Zn+Cu2+=Zn2++Cu _________________________________________
(5)H++OH-=H2O _________________________________________