2018年华南理工大学880分析化学考研真题.pdf

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1、88020181311-20 1 21-30 21. Na2HPO4ABCD2.ABCD3. EDTA EDTAAB EDTACD4.AB O2I-2CD5. Cl-pH=4.0ABCD6.ABCD Cl-KMnO47. AgCl 0.01mol/LHClABCD8.ABCD9. pHAB3CD10. Fe3+Al3+Ca2+Cl-A 0.1 mol/L KNO3B 0.1 mol/L NaOHC 0.1mol/L pH 5-6D 0.1 mol/L NaAc pH 5-611. 1,2,3 12 3 tA t1t2t3B t1t1t3D t2EDTA Ca2+2 NaOH H2A A-3 A

2、gNO3NaCl4 Ce4+Fe2+A. 3,2B. 1,3C. 4,3D. 1,230. NaOH HCl MO PPNaOH CO2HClA. MO PPB. MO PPC. MO PPD. MO PP81-20 1 21-30 21. n2. F F3. c NH4H2PO44. H2B Ka1Ka2HB-HB-5. Et0.1% pH= 0.36.EDTA7. pH=12.5 NaOH EDTA Ca2+Mg2+Ca2+8. pH EDTAY(H)9. 3 12 310.11. 2 99.9%V12. 1.0 10-5mol/L 1cm0.43013.914.20% 12%100%15

3、.16. 0.5mv17.18.19.20.21. 5.0 mmol/g 1.00g5.0 mL 25.0 mL=4022. KCa2+,Na+=0.002 2.0 10-4mol/LCa2+0.10 mol/L NaCl Na+%23. % 6.45 6.43 6.27 6.42Q 6.27 _ Q0.10 3=0.94 Q0.10,4=0.7624. TH2SO4/NaOH=0.005000 g/mL cNaOH= mol/L=98.0725. 1.050 g/mL 25.00 mL 250 mL1025.00mL 0.1025mol/LNaOH25.08mL HAc% HAc =60.0

4、526. Cu2+-NH3lg1-44.3 8.0 11.0 13.3NH3=1.0 10-4mol/L _27. 6%0.1mg 0.1%g28. 2Fe3+2I-=2Fe2+I2 Fe3+/Fe2+=0.77 VI2/I-=0.535V25 K=29. 0.0142 g 1 L 380 nm 1cm0.45 =1.4 104L/(mol cm)30. 1.0m VanDeemterA B C1.0 m 0.08 cm 0.4cm2/s 0.14s0.60 cm/s8 501. pH=4.1 1 - pKa=4.74- pKa=4.21 2 1 L 0.10 mol/L=82=144 62.

5、 0.6780gN NH30.1000 mol/L HCl1112.45mL 1 N=14.01 16% 2pKa=9.24 pKa=4.76 363. pH=5.5 0.020 mol/L EDTAAl3+F-=0.010 mol/LEDTA Al3+lgKAlY=16.1AlF1-6lg1-66.1 11.1 15.0 17.8 19.4 19.8 pH=5.5lgAl(OH)=0.8 lgY(H)=5.6 Et0.1% pM= 0.2 84. 0.2500g Pb PbCrO42PbCrO42Pb2+Cr2O72-KI Cr2O72-I20.1000 mol/L Na2S2O314.12

6、mL Pb Pb3O4Pb3O4=685.6 55. HA pKa=4.0 KD=33 A-30 mL pH=5.0 HA 20 mL2 10 mL 1 D 2 E66. Ka HInHIn In-max528 nm 400 nm 1cm pHA1 HIn In-528 nm 400nm2 pH=4.31 HIn In-3Ka 612/( mol/L)A528 nm 400nm1.22 10-30.1mol/LHClHIn1.738 0.0771.09 10-30.1 mol/LNa2CO3In-0 0.7530.1 mol/LHAc-NaAc pH=4.311.401 0.1667. X-M2+50mL 4.00 mmol M2+M2+X-=MX+HgHg2Cl2,Cl-(1mol/L) M2+M0.00 V MX+K2/M M=0.48V2 2/Hg Cl Hg=0.28V 58. -25.00 mL1.5mL 2 mL 100 l 100 mg/L 1 23 f /f 4mg/L 810.0 mg/L 6.0 mg/L/min /min4.365 0.125 1330 7105.625 0.147 2357 769131 20self-assembly251. 42.63. 54. 520-550 nm5