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【多选题】
下列叙述中正确的是A.
体积相同、浓度均为0．1mol/L的NaOH溶液、氨水，分别稀释m倍、n倍，溶液的pH都变成9，则m
B.
有甲、醋酸溶液，测得甲的pH=a，乙的pH=a+1，若用于中和等物质的量浓度等体积的NaOH溶液，需甲、酸的体积V（乙）>10V（甲）
C.
25℃，pH=9的NaOH溶液和NaAc溶液中，由水电离出的c（H+）均为10-5mol·L-1
D.
c（Na+）+c（H+）=c（OH-）+c（HCO3-）+2c（CO32-）该式满足NaHCO3溶液中的离子浓度关系。
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