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REDOX REACTIONS

REDOX REACTIONS. ATTENTION : There have been some corrections in the questions 1-2 in Chapter 12 CHM101 Exercises which are given below Aşağıda asidik çözelti içinde gerçekleşen redoks tepkimelerini denkleştiriniz a )MnO 4 - + I - + H + Mn 2+ + I 2 (s) + H 2 O

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REDOX REACTIONS

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  1. REDOX REACTIONS • ATTENTION : Therehavebeensomecorrections in thequestions 1-2 in Chapter 12 CHM101 Exerciseswhicharegivenbelow • Aşağıda asidik çözelti içinde gerçekleşen redoks tepkimelerini denkleştiriniz • a)MnO4-+ I- + H+ Mn2+ + I2(s) + H2O b)BrO3-+ N2H4 + H+Br- + N2 + H2O c)UO2+ + NO3- + H+ UO22+ + NO (g) + H2O • Aşağıda bazik çözelti içinde olan redoks tepkimelerini denkleştiriniz a) CN-+ MnO4- + OH- MnO2 (s) + CNO - + H2O b)Fe(OH)2(k) + O2 (g) + OH- Fe(OH)3 + H2O c)[Fe(CN)6]3-+ N2H4 + OH- [Fe(CN)6]4- + N2 + H2O d) As2S3+ OH- + H2O2 AsO43- + H2O + SO42-

  2. Answers: • 1 a) 2 MnO4 - + 16 H+ + 10 I - 2 Mn+2 + 8 H2O + 5 I2 • 1b) 2 BrO3- + 3 N2H4 2 Br - + 3 N2 + 6 H2O • 1c)3 UO+2 +2 NO3- + 2 H+ 3 UO2+2 +2 NO + H2O • 2 a) 3 CN - + 2 MnO4- + H2O 3 CNO - + 2 MnO2 + 2 OH- • 2 b) 4 Fe(OH)2 + 2 H2O + O2 4 Fe(OH)3 • 2c) 4 [Fe(CN)6] -3 + 4 OH- + N2H4 4 [Fe(CN)6]-4 + N2 + 4 H2O 2d) As2S3 + 12 OH- + 14 H2O2 2 AsO4-3 + 3 SO4-2 +20 H2O

  3. Questionsyoushouldstudyfor FINAL • Advanced Exercises: • Thermochemistry(Chapter 8 –Q4 and Q8) andallcalorimeterquestions • ChemicalKinetics (Chapter 9) Q3 –answers: c) k= 0,1028 ; h) 11,7 min i)0,609 ; 47,84% • Solutions-Chapter 8 Q3 • CHM101 Exercises: • Electrochemistry-Chapter 12 Q1, Q2, Q4c) 0,913 V Q4 e) 528,5 kJ ,Q5 Ecell = 1,815 V • + theslide (ACIDS_BASES-ELECTROCHEMISTRY FINAL • + a gaseousmixturequestion( daltonpartialpressureslaw, ideal gases, total mass - molecalculationforeach of gas in themixture

  4. SECTION A-CONTENT(8 Multiplechoicequestions) • Chp 1-Extensive-Intensive properties of matter • Chp 2- Atom models, theories, proton,neutron, electrons, otherparticles,rays • Chp 4- Atomicradius, Ionizationenergy, Electronaffinity, electronconfiguration of theelements, transitionmetals, inner-transitionmetalsmetals,metalloids, nonmetals,O.S(oxidationstate), para-dia,ferromagnetism • Chp 7- Interpretation of thespontaneity(ΔG ) • Chp 8- Boilingpointincrease(molality, Van’thofffactor(i), Osmoticpressure

  5. SECTION A-CONTENT(8 Multiplechoicequestions) • Chp 10: Le Chetalierprinciple, factorsaffectingtheequilibrium • Chp11: Determination of conjugatedacidbasecouples- Arrangement of theacidsaccordingtotheirstrength • Chp 12: Voltaiccell, cathode-anode- oxidizing, reducingagent, direction of electronflow, E° calculation of voltaiccell

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