把0.02mol/L CH3COOH溶液和0.01mol/L NaOH溶液等体积混合,则混合溶液中微粒浓度关系,正确的是( ) A.c ( CH3COO - )>c(Na+) B.c(CH3COOH)>c (CH3COO-) C.2c(H+)= c(CH3COO - )—c(CH3COOH) D.c(CH3COOH)+c

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把0.02mol/LCH3COOH溶液和0.01mol/LNaOH溶液等体积混合,则混合溶液中微粒浓度关系,正确的是()A.c(CH3COO-)>c(Na+)B.c(CH3COOH)>c(CH3COO

把0.02mol/L CH3COOH溶液和0.01mol/L NaOH溶液等体积混合,则混合溶液中微粒浓度关系,正确的是( ) A.c ( CH3COO - )>c(Na+) B.c(CH3COOH)>c (CH3COO-) C.2c(H+)= c(CH3COO - )—c(CH3COOH) D.c(CH3COOH)+c
把0.02mol/L CH3COOH溶液和0.01mol/L NaOH溶液等体积混合,则混合溶液中微粒浓度关系,正确的是( ) A.c ( CH3COO - )>c(Na+) B.c(CH3COOH)>c (CH3COO-) C.2c(H+)= c(CH3COO - )—c(CH3COOH) D.c(CH3COOH)+c(CH3COO - )=0.01mol/L

把0.02mol/L CH3COOH溶液和0.01mol/L NaOH溶液等体积混合,则混合溶液中微粒浓度关系,正确的是( ) A.c ( CH3COO - )>c(Na+) B.c(CH3COOH)>c (CH3COO-) C.2c(H+)= c(CH3COO - )—c(CH3COOH) D.c(CH3COOH)+c
A
两者混合后,形成缓冲溶液,因为c(HAc)/c(Ac-)=1
所以溶液的PH=PKa=4.76 呈酸性,所以有c ( CH3COO - )>c(Na+)

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