莆田吉城
幼苗
共回答了18个问题采纳率:88.9% 举报
次氯酸钠摩尔=16.7/74.442=0.224 mol
次氯酸钠摩尔浓度(量浓度)=0.224 mol/0.0833 L = 2.69 mol/L
Ka=3.0x10^-8
Kb=Kw/Ka=10^-14/3.0x10^-8=3.33x10^-7
ClO- + H2O HClO + OH-
Kb=3.33x10^-7 =[OH-]^2/2.69
X=[OH-]=9.47x10^-4 ===>pOH =3.02
pH=10.98
1年前
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