25 °C 时 , 用 0.1 mol·L - 1 NaOH 溶液滴定 20 mL 0.1 mol · L - 1 HX 溶液 , 溶液的 pH 随加入的 NaOH 溶液体积的变化如图所示。下列说法不正确的是
A.
HX 为弱酸
B.
V 1 < 20
C.
M 点溶液中离子浓度由大到小的顺序: c (X - ) > c (Na + ) > c (H + ) > c (OH - )
D.
0.1 mol · L - 1 NaOH 溶液和 0.1 mol·L - 1 HX 溶液等体积混合后 , 溶液中 c (Na + ) = c (X - ) + c (OH - )
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