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【单选题】
常温下，用0．1000mol/L NaOH溶液滴定20．00mL 0．1000mol/L HCl溶液，滴定曲线，如图所示。下列说法不正确的是 [ ]A.
a=20．00
B.
滴定过程中，可能存在：c(Cl - )＞c(H + )＞c(Na + )＞c(OH - )
C.
若用酚酞作指示剂，当滴定到溶液明显由无色变为红色时停止滴定
D.
若将盐酸换成同浓度的醋酸，则滴定到pH=7时，a＞20．00
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A.
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B.
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A.
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B.
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