常温下, amol·L-1HX和bmol·L-1HY两种酸溶液,下列说法不正确的是   

常温下, amol·L-1HXbmol·L-1HY两种酸溶液,下列说法不正确的是             

A.若a=bc(X-)>c(Y-),则酸性HX>HY

B.若a>bc(X-) = c(Y-),则酸性HX>HY

C.若a<b且两者pH相同,则HY一定是弱酸

D.若向HX溶液加入等浓度等体积NaOH溶液,所得溶液pH>7,则HX为弱酸

答案

B

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