Ac-(Ka=1.8×10-5) B. CN-(Ka=6.2×10-10) CO32-(Ka1=4.2×10-7; Ka2=5.6×10-11) D. F-(Ka=3.5×10-4)
A. [H+] = [OH-]+c(HCl) B. [H+]+c(NaOH) = [OH-]+c(HCl) C. [H+]+c(NaOH) =[OH-] D. [H+] = [OH-]+c(HCl)+c(NaOH)
A. H2C2O4 B. HC2O4- C2O42- D. H2C2O4 + HC2O4-
A. 0.2mol/L HAc—0.2mol/LNaAc B. 0.3mol/L HAc—0.1mol/LNaAc C. 0.1mol/L HAc—0.1mol/LNaAc D. 0.1mol/L HAc—0.3mol/LNaAc
A. 7.77~9.77 B. 8.77~10.77 C. 5.23~6.23 D. 4.23~6.23
A. 含Na2CO3和NaHCO3 B. 1升水中加同是0.1mol/L的NaAc和HAc各一滴 C. 含HCl和NaCl D. 1升0.1mol/LHAc溶液中加一滴0.1mol/LNaAc