Al2(SO4)3 + 6NAOH == 2Al(OH)3 + 3NA2SO4（加少量氢氧化钠,出白色沉淀）Al(OH)3+ NaOH == NaAlO2 + 2H2O（随着氢氧化钠的过量,白色沉淀消失）总方程式就是Al2(SO4)3 + 8NAOH == 2NaAlO2 + 3NA2SO4 + 4H2O建议写离...