100mL 0.3mol ⼀L Na2SO4溶液和50mL 0.2mol⼀LAl2(SO4)3溶

2025-05-18 08:29:29
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回答(1):

n(SO4 2-)=0.1*0.3+0.05*0.2*3=0.6mol
c(SO4 2-)=0.6mol/(0.1+0.05)L=0.6/0.15L=4mol/L