1、 2017 I 4 48 1 A PH=7 B c H + =c OH - C c H + =c OH - =10 -7 mol/L D c H + OH - =10 -142 25 H2O H OH 0 A c(OH ) B c(H ) Kw C CH3COONa c(H ) D Kw pH 3 A CuCl2 CuCl2 B NH4HCO3 NH4HCO3 C FeCl3 Fe(OH)3 D C2H2 4 A Al2 SO4 3 B NaHCO3 C Fe NO3 3 D NH4Cl 5 0.01mol/L pH 24 WA M N ZB Z aC X W 1 2 1D Z R V6 1
2、CH3COOH 1 NaOH c(H + ) NaOH xA a c BB pH=7 c(H + )=10 7 zC b 2c(Na + )=c(CH3COO )+c(CH3COOH) eD a d 10 12 10 7 f7 pH 3 a L 3 1 J b L ) 3 1 c L ) 3 1 Ba(OH)2 d L a b c d rA b a d c B a b c d sC a b d c D c a d b M8 N9 mol 1 5A. mol 7 10 B. mol 14 10 C. mol 1D. mol 9 10 8 . 1 z10 H3PO4 NaOH ( ) pH Ca3
3、(PO4)2 3A H3PO4 Ka3 10 -12.2 HPO4 2- 10 -6.8 PB Na2HPO4 CaCl2 nC NaH2PO4 pH 4 5.5 WD pH 13 c(Na + ) c(HPO4 2- ) c(PO4 3 ) c(OH ) c(H + ) g11 1 HCN 1 NaCN C(CN - ) C(Na ) =A C(Na ) C(CN - ) C( H ) C(OH - ) =B C(HCN)+C (CN - -1C C(CN - ) C(HCN) D C(Na )+C(H )= C(CN - )+C(OH - ) 12 A NaOH NH3 B NaCl KI
4、 Ksp(AgCl) Ksp(AgI) C 2mL 2% CuSO4 46 2%NaOH 0.5mL X X D pH=3 HA HB HA HA 13 0.1000 mol/L HCl 20.00 mL 0.1000 mol/L NH3 2O A c(C1 ) c(NH4 + )c(OH ) c(H + ) B c(NH4 + )c(C1 )c(OH )c(H + ) C c(C1 )c(H + )c(NH4 + )c(OH ) D c(NH3 2O)c(NH4 + )c(OH )c(Cl )c(H + ) 14 A 0.1mol 1 L CH3COOH 3 (H ) (CH COOH) c
5、 c B CH3COONa 3 3 (C HC O O) (C HC O O H ) (O H) c cc C 4 (NH ) 1 (Cl ) c c D AgCl AgBr AgNO3 (C l ) (B r ) c c 15 A pH 9 Na2CO3 pH 5 NaHSO4 B Al 3+ KNO3 Al 3+ C HF HCN NaF NaCN D 4 4HSO4 2 3 4)2SO4 pH 16 A Kw B Kw A Kw C Kw D B C D C B pH=4 pH=10 pH=7 D C D II 52 17 14 7475321 1 (N2H4) N2(g) + 2O2(
6、g)= 2NO2 mol N2H4(g)+ O2(g) N2(g)+2H2 534 kJ mol N2H4 NO2 _ 2 0.1mol/L H2A pH=4 H2A c(H + )= 3 a b c(H + ) a b pH H2 a b pH 100 pH a b 18 1 pH NaOH CH3COONa CH3COONa pH NaOH pH 2 pH 4 NH4 2SO4 4HSO4 c NH4 + 3 c NH4 + c Cl 4 NH4HSO4 NaOH C NH4HSO4 C NaOH C SO4 2 C NH4 + A 250mL 250 ml B 25mL C W g D
7、1 HCl 1 V mlE 2 V ml 1 2 3 E 4 5 19 A 250ml 250ml B 25ml C Wg D Mmol/L V1 ml E. V2 ml . E D PH 20 SiO2 Al2O3 Fe2O3 1 NH4Fe(SO4)2 NH4Al(SO4)2 NH4Fe(SO4)2 NH4 Cl CH3COO NH4 NH4 + 2 B NaOH 3 KSPFe(OH)3 38 KSPAl(OH)3 33 c Fe 3+ c Al 3+ 0 9 1 A pH= NH4HCO3 pH 4 D Al(OH)3 21 Mg 2+ Al 3+ Fe 3+ Ba 2+ H + NH
8、4 + SO4 2 HCO3 Cl CO3 2- AgNO3 BaCl2 7475321 500mL 1 de 2 ( ) 3 ( ) 4 5 01.1mol ( ) 1 B 2 B A c H + c(OH ) A B c H + KW B C c H + Kw C D KW pH D B 3 D A A B NH4HCO3 B C C D D D 4 A NaHCO3 NH4Cl Fe NO3 3 Al2 SO4 3 A 5 C . R-X A M Si N P Si P Ma ) 3mol/L c L c( 3mol/L, c(OH ) 3mol/L d L, d=a b a d c A
9、 8 D A. B. Fe 3+ +3SCN - =Fe(SCN)3. KCl, C. D.Na2CO3 C(CO3 2- ) C(OH - ) C(H + ) 9 D Kw=c(H + )c(OH - ) c(H + )=c(OH - ) c(H + )=10 -7 mol/L 1mol 18g 18ml n(H + -7 -9 mol 10 D A HPO4 2- 10 12.2 mol/L H3PO4 Ka3 2 . 12 2 4 3 4 10 ) ( c ) ( c ) ( c HPO PO H H2PO4 - HPO4 2- 10 7.2 mol/L 10 6.8 mol/L HPO
10、4 2- 8 . 6 2 4 4 2 10 ) ( c ) ( c ) ( c HPO PO H OH A B Na2HPO4 CaCl2 Ca3(HPO4)2 B C pH 4 5.5 NaH2PO4 NaH2PO4 pH 4 5.5 C D pH 13 c(PO4 3 ) c(HPO4 2- ) D D 11 D 100L mol HCN n 2 ) ( mol NaCN n 2 ) ( ) ( ) ( ) ( ) ( OH c CN c Na c H c C(CN - ) C(Na ) ) ( ) ( OH c H c CN A C(Na ) C(CN - ) C(OH - ) C( H
11、 ) B C(HCN)+C (CN - -1 C C(HCN) C(CN - ) D 12 B A.NH3 B. Ksp(AgCl) Ksp(AgI) C.2mL 2% CuSO4 46 2%NaOH X D. pH=3 HA HB HA HA 13 D 0.1000 mol/L HCl 20.00 mL 0.1000 mol/L NH3 2O HCl + NH3 2O=NH4Cl +H2O NH3 2O NH3 2O NH4Cl NH3 2O NH4 + c(NH4 + ) c(C1 )c(OH ) c(H + ) A PH=7 c(NH4 + )=c(C1 )c(OH )=c(H + ) B NH4Cl NH4 + c(C1 )c(NH4 + )c(H + )c(OH ) C NH3 2O NH4Cl c(NH3 2O)c(NH4 + )c(OH )c(Cl )c(H + ) D D 14 D A 3 (H ) (CH COOH) c c = 3 (CH COO ) K c B 3 3 (C HC O O) (C HC O O H ) (O H) c cc =1/K K C c(H + )=c(OH - ) c(NH4 + )=c(Cl - ) D
