下列离子方程式书写错误的是( )A.将过量NaOH溶液滴入同浓度的少量Ca(HCO3)2溶液中:Ca2++2HCO3?+2OH?=CaCO3↓+2H2O+CO32?B.向Ba(OH)2溶液中逐滴加入NaHSO4溶液至刚好沉淀完全:Ba2++OH?+H++SO42?=BaSO4↓+H2OC.向Ca(ClO)2溶液中通入适量SO2:Ca2++2ClO-+SO2+H2O═CaSO3↓+2HClOD.向FeBr2溶液中加入过量氯水:2Fe2++Cl2=2Fe3++2Cl?