题目

能正确表示下列反应的离子方程式是 A．硫酸铝溶液中加入过量氨水： A13+ +3OH-=Al(OH)3↓ B．冷的氢氧化钠溶液中通入氯气： Cl2+2OH-=ClO-+Cl-+H2O C．NaHSO4溶液与Ba(OH)2溶液混合：SO42-+Ba2+=BaSO4↓ D．Fe(OH)3溶解于氢碘酸中：Fe(OH)3 + 3H+= Fe3++3H2O 答案：B To save some of the human languages before they are forgotten, the students in our school started a discussion “Save Our ________” A. Sky                B. Life              C. Arts        D. Voices