1、 1 10 mL 0.01 mol L -1NaHC2O4 0.01 mol L NaOH NaOH A V NaOH = 0 c H + = 2mol L -1B V NaOH 10 mL c Na c C2O 2 4 c HC2O 4 2. 2009 0 . Na2CO3 CO 3 2-+ H 2 O HCO 3 -+ OH - A. B. CO2 C. 3 2 3 () () c HCO c CO D. NaOH PH 3 pH A pH B pH C pH D pH 4 pH x y z pH x y z A x=y=z B xy=z C xc(OH )c(CH3COO )c(H
2、) B. A c(CH3COO ) + c(CH3COOH) = 2c(Na ) C. B c(OH ) = c(H ), c(Na ) = c(CH3COO ) D. C c(CH3COO ) c(Na )c(H )c(OH ) 10. A. 2mol/L 1mol/L c (OH ) 2:1 B. C. Na 2 CO 3 NaHCO 3 D. 优 良 中 差 成绩11 3COOH NaOH 3COOH pH=12 pH=12 NaOH pH=7 1 2 3 4 5 6 7 8 9 10 pH c(CH3COO ) c(H ) A B C 12. FeS FeS(S) Fe 2 + S
3、 2 , Ksp = 8.1 10 -17 1 FeS 2 H2S c(H ) c(S 2 ) c(S 2 ) c(H ) 2 = 1.0 10 -22 c(Fe 2 ) 1mol/L FeS c(H ) 13 SrCl2 1.0g AgNO32.38g AgNO3 Cl Ag + Cl . Fe 3+ 0.2mol/L NH4SCN AgNO3 Ag + AgSCN . (1). . (2). . (3). Ag + n ( ) . 1 B 2 B 3 BD 4 1 2 NH4Cl NH3 H2O (3) HCl, NH4Cl 5 AC 6 D 7 1 2 ; 3 2Fe3 3Mg(OH)2
4、 = 3 Mg2+ 2Fe(OH)3 4 A C D E 1C 2B 3C 4D 5B 6C 7B 8. 1 ,KsP Cu(OH)2=2.2 10 -20 KspMg(OH)2=1.8 10 -11 2NH3 H2O Cu 2 Cu(OH)2 2 NH4 * (2) c(NH4 * )=c(Cl - ) H OH - Kb= OH - NH4 * NH3 2O c(NH4 * )=c(Cl - ) 0.005 mol L -1 H OH - 1 10 -7mol L -1 25 NH3 H2O a 2 mol L -1 0.005 mol L -1 Kb= 10 -9 a 0.01 mol L -1 11. 1 2 3 4 ABC 12. 1 7.92*10 -8 2 1.11*10 -3mol L -113(1). (2). HNO3 (3) (4). (5) 79.5% 1 2 3 4 5 6 7 8 9 10 D B D B AC C D CD AB AB
