【多选题】下列说法正确的是( )
A.
常温下pH为5的盐酸溶液稀释1000倍后,pH等于8
B.
浓度均为0.1mol/L的氨水和氯化铵溶液,水电离出的c(H + )前者小于后者
C.
碳酸钠溶液中存在:c(Na + )=2c(CO 3 2- )+c(HCO 3 - )+c(H 2 CO 3 )
D.
等物质的量浓度的CH 3 COOH溶液与KOH溶液任意比混合:c(K + )+c(H + )=c(OH - )+c(CH 3 COO - )
【单选题】下列说法正确的是
A.
常温下pH为5的盐酸溶液稀释1000倍后,pH等于8
B.
浓度均为0.1 mol/L的氨水和氯化铵溶液,水电离出的c(H + )前者小于后者
C.
碳酸钠溶液中存在:c(Na + )+c(H + )= c(CO 3 2— )+c(OH — )+c(HCO 3 — )
D.
等浓度的CH 3 COOH与KOH以任意比混合: c (K + )+ c(H + )> c(OH — )+ c (CH 3 COO - )
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【单选题】pH=1和pH=5的两种盐酸溶液等体积混合,其溶液的pH是()。
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