问题 选择题

25℃时,用0.1000mol/L NaOH溶液滴定20.00mL 0.1000mol/L CH3COOH溶液所得滴定曲线如图.下列叙述正确的是(  )

A.点①所示溶液:c(CH3COO-)+c(CH3COOH)=c(Na+

B.点②所示溶液:c(Na+)=c(CH3COO-)>c(H+)=c(OH-

C.点③所示溶液:c(Na+)>c(OH-)>c(CH3COO-)>c(H+

D.滴定终点时:c(CH3COOH)+c(CH3COO-)=c(Na+

答案

答案:B

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