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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】已知 HAc的pKa=4.75,将0.Olmol/L HAc溶液与0.1mol/L NaAc溶液等体积 混合,则此缓冲溶液的 pH为( )
A.
3.75
B.
4.75
C.
5.75
D.
9.25
【单选题】2 A good modern newspaper is an extraordinary piece of reading. It is remarkable first for what it contains: the range of news from local crime to international politics, from sport to business to fas...
A.
wide coverage
B.
uniform style
C.
speed in reporting news
D.
popularity