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)MnO4- + I- + H+ Mn2+ + I2(s) + H2O

b)BrO3- + N2H4 + H+ Br- + N2 + H2O

c)UO2+ + NO3- + H+ UO2

2+ + NO (g) + H2O• Aşağıda bazik çözelti içinde olan redoks tepkimelerini

denkleştiriniza) 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 + SO4

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

Questions you should study for FINAL• Advanced Exercises:• Thermo chemistry(Chapter 8 –Q4 and Q8) and all calorimeter

questions• Chemical Kinetics (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• + the slide (ACIDS_BASES-ELECTROCHEMISTRY FINAL • + a gaseous mixture question( dalton partial pressures law,

ideal gases, total mass - mole calculation for each of gas in the mixture

SECTION A-CONTENT(8 Multiple choice questions)

• Chp 1-Extensive-Intensive properties of matter• Chp 2- Atom models, theories, proton,neutron,

electrons, other particles,rays• Chp 4- Atomic radius, Ionization energy, Electron

affinity, electron configuration of the elements, transition metals, inner-transition metals metals,metalloids, nonmetals,O.S(oxidation state), para-dia,ferro magnetism

• Chp 7- Interpretation of the spontaneity(ΔG )• Chp 8- Boiling point increase(molality, Van’t hoff

factor(i), Osmotic pressure

SECTION A-CONTENT(8 Multiple choice questions)

• Chp 10: Le Chetalier principle, factors affecting the equilibrium

• Chp11: Determination of conjugated acid base couples- Arrangement of the acids according to their strength

• Chp 12: Voltaic cell, cathode-anode- oxidizing, reducing agent, direction of electron flow, E° calculation of voltaic cell