单项选择题
在0.25mol/L次氯酸(HClO)的Ka=3.2×10-8溶液中,Ch+和电离度分别为:()
A.8.9×10-5mol/L,0.036% B.8.0×10-9mol/L,3.2×10-6% C.8.0×10-9mol/L,0.036% D.8.9×10-5mol/L,3.2×10-6%
A.1.34×10-3mol/L B.9.46×10-12mol/L C.1.8×10-5mol/L D.5.56×10-10mol/L
A.5 B.10 C.20 D.-10
A.6 B.24 C.120 D.720
A.1 B.0 C.0.5 D.2
A.OPEN(UNIT=3,FILE=AA.DAT,STATUS=NEW) B.OPEN(UNIT=3,FILE=AA.DAT,STATUS=OLD. C.OPEN(3,FILE=′AA.DAT′,STATUS=′NEW′) D.OPEN(D,FILE=′AA.DAT′,STATUS=′OLD′)
A.OSI B.IPX/SPX C.ICP/IP D.CSMA/CD
A.Alt+Esc B.Ctrl+Esc C.Alt+Tab D.Ctrl+Tab
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