氧化还原滴定法习题课件.ppt

1、分析化学分析化学VCeCe28.134查表可知，VCCCeCeCeCe34.11000.11000.1lg059.028.1lg059.0323434VCCCrOCrCrOCr01.1100.00500.0lg059.028.1lg6059.02232723272AsO43-+2e+2H+AsO33-+H2Olg2059.0lg059.0lg2059.033343323433343334AsOAsOHAsOHAsOAsOAsOAsOAsO3334/1时，当LmolAsOAsOVHAsOAsOAsOAsO500.0lg059.033343334MnO4-+5e+8H+Mn2+4H2O lg505

2、9.0094.051.1lg5059.0lg5059.0lg5059.024248284242424MnMnOpHMnMnOHMnHMnOMnMnOMnMnOMnMnOpHMnMnO094.051.124VpHMnMnO32.10.2094.051.10.224VpHMnMnO04.10.5094.051.10.5245)(21108.146.9311.71.4837.2lglg763.032NHbZnZnKV，分别为锌氨络离子的，查表可知)/(10108.1100.1100.120.077.15443LmolNH55.2477.146.9377.131.7277.181.477.137.2)

3、(101010101013NHZnVNHZnZnZnZnZn838.010lg2059.0763.01lg2059.055.2)(322VLmolCZnZnZnZnZn947.0109.0838.0)100.2lg(2059.0/100.244222时，当LmolKHKCNHaaNH/10085.010101010.007.125.90.1025.93391.414.205.707.124.3)(10101013NHAg80.01lg059.080.0)(/3NHAgAgAg72.260.1000.132.14)(1010101/11222HYFeYFeYFeYKYK50.1360.1000.

4、11.25)(1010101/113HYFeYFeYFeYKYKVLmolCCFeFeFeFe135.01010lg059.077.0/150.1372.2/2323时，当56105.24.56059.0)535.020.1(5059.0)(5lg223KKIIIIO12106.788.12059.068.044.1059.0)(lg2334KnKFeFeCeCeVnnnnEFeFeCeCeSP06.11168.044.121212334V26.186.03059.044.13059.068.0即滴定突跃范围：25.65059.0)68.045.1(5059.0)(5lg2324FeFeMnM

5、nOK24223MnOMnFeFeCCCCSP时66552322432FeFeFeMnOFeMnCCCCCCK1088.10624.656105.7101033KCCFeFe2322272631OSIOCrLmolVMmCOSNaOCrKOCrKOSNa/1004.098.21188.29410001082.06100016322722722322Cr2O72-+6I-（过量）+14H+2Cr3+3I2+7H2O I2+2S2O32-2I-+S4O62-)(61)(5)(3223OSNaKIOKICVCVCVLmolCKI/02839.000.25)27.211010.06100.100500

6、0.0(5 酸碱：1 KHC2O4H2C2O42H2O3 H+3 OH-氧化还原：2MnO4-+5C2O42-+16H+2Mn2+10CO2+8H2O 5 KHC2O4H2C2O42H2O4 MnO4-4 MnO4-15OH-LmolVCVCKMnOKOHKMnO/0400.000.4000.302000.0154)(154442211SI232221OSI004.100.2005020.0)(2mmolCVI总5324.016.2105032.021)(21)(3222mmolCVCVOSNaI余4716.05324.0004.1)()()(22222mmolCVCVCVnnIIISSH余总

7、LgTSH/3207.05010001000344716.022MnO4-+5 H2O2+6H+2Mn2+5O2+8H2O2224552OOHMnOmmolmL14.22气体又已知标准状况下，mmolnMnO8936.0234.2524mLVKMnO68.4402000.08936.04%038.3%100500.234234.2%22OH233322121IAsOOAsnnnmmolCVnIOAs2625.0200.21025.0)(21232）（总5232343323234221OAsOAsAsOAsOOSAsOnnnnnnmmolnCVnOAsOSNaOAs3000.02625.0562

8、5.02625.000.30075.041)(413232252mgWmgWOAsOAs95.6884.2293000.093.5184.1972625.05232%98.22%1001000500.184.22900.303000.061%89.9%1001000500.184.1973005000.021%5232OAsOAs%02.12%1001000000.10.166)14.211008.06100.1005000.0(5%1001000)61(5%32232233SMVCVCKIKIOSNaOSNaKIOKIOLmolCMCTOSNaIOSNaIOSNa/1251.08.25310

9、0001587.0210002132223222322LmolCCVCVCrOOSNaOCr/01668.000.25600.201251.0)(61)(27322272%64.75%100100025.069.15968.2301668.03%1001000)(3%3227232SMCVOFeOFeOCrLmolCCVCVBrOBrOOS/03006.000.2560.411084.061633232）（）（依题可知%8.89%1001000250254083.011.94)6/04.201084.000.2503006.0(%100100025025)(61)(%2323SMCVCVOSB

10、rO苯酚苯酚LmolCCgTOCrKTFeCrOK/02500.0100085.556008378.0722272/mlVVOSOS50.202000.000.602500.0600.501000.0232232%107.7%1002/000.200.5250.202000.031%CrmolnOC310000.5100000.202500.0242总总加入量molnKMnOOC33410000.11000.1004000.025242余定量反应与molnnPbPbOOCOC332210000.410)000.1000.5(242242沉还和沉淀还原molnPbOC33210000.31000

11、.3004000.025242沉沉淀所有molnPbOOC33210000.110)000.3000.4(242还还原molnPbOC33210000.210)000.1000.3(242沉沉淀%71.35%100250.12.22310000.2%14.19%100250.12.23910000.1%3322PbOPbOPbOPbO含量和%04.2%10010005000.004.78)50.71000.05100.2502000.0(83%2SNaPb3O4 3PbCrO43/2 I2 3S2O32-%42.27%10010001000.06.68500.121000.031%4PbCrO放映放映结束！结束！无悔无愧于昨天，丰硕殷实无悔无愧于昨天，丰硕殷实的今天，充满希望的明天。的今天，充满希望的明天。