下列离子方程式正确的是
A.氯气溶解于水:Cl2+H2O =HClO+Cl-+H+ |
B.沸水中滴入饱和FeCl3溶液,溶液呈红褐色:Fe3++3H2O= Fe(OH)3↓+3H+ |
C.醋酸钠溶液显碱性:CH3COO-+H2O =CH3COOH+OH-. |
D.久置的H2S 溶液变浑浊:2S2-+O2+4H+ =2S↓+2H2O |
下列离子方程式正确的是
A.氯气溶解于水:Cl2+H2O =HClO+Cl-+H+ |
B.沸水中滴入饱和FeCl3溶液,溶液呈红褐色:Fe3++3H2O= Fe(OH)3↓+3H+ |
C.醋酸钠溶液显碱性:CH3COO-+H2O =CH3COOH+OH-. |
D.久置的H2S 溶液变浑浊:2S2-+O2+4H+ =2S↓+2H2O |