User:Neeti m/B.Sc.(H)Chemistry-part-II/User:Neeti m/Assignments

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Syllabus of B.Sc. (Honours) Chemistry-Part-II

PHYSICAL CHEMISTRY

Paper : IX M.Marks : 38

Chemical Thermodynamics

Systems of variable composition : Partial molar quantities, dependence of thermodynamic parameters on composition ; Gibbs-Duhem equation, chemical potential of ideal mixtures, change in thermodynamic functions in mixing of ideal gases ; criteria of thermodynamic equilibrium, degree of advancement of reaction, chemical equilibria in ideal gases, concepts of fugacity , activity and activity coefficient. Equilibrium constants and their quantitative dependence on temperature, pressure and concentration, Le Chatelier principle (quantitative treatment) ; equilibrium between ideal gases and pure condensed phase. Multistage equilibria in polyelectrolyte systems ; dissociation constants of mono-, di and tri-protic acids (exact treatment) ; hydrolysis and hrdrolysis and hydrolysis constants.

Phase equilibria Concept of phase, components and degree of freedom, derivation of Phase rule for non-reactive and reactive systems; Clausius-Clayperon equation equation and its application to solid-liquid, liquid-vapour and solid-vapour equilibria, phase diagram for one component systems.

Solutions: Dilute solution, lowering of vapour pressure, Raoult’s and Henry’s Laws. Colligative properties : (i) elevation of boiling point, (ii) depression of freezing point, (iii) osmotic pressure.

Binary solutions: Duhem-Margules equation and its applications to fractional distillation of binary miscible liquids, azeotropes, lever rule, partial miscibility of liquids, CST, miscible pairs, steam distillation; Nernst distribution law, its derivation and applications. Phase diagram for systems of solid-liquid equilibria involving eutectic, congruent and incongruent melting point, solid solution. Three component systems, water-chloroform-acetic acid system, triangular plot.

Macromolecules: Distribution in chain lengths of synthetic linear macromolecules, average molar masses; determination of average molar masses by methods based on osmotic pressure, sedimentation, viscosity and gel permeation methods (qualitative description and discussion of methods).

Conductance: Arrhenius theory of electrolytic dissociation, strong and weak electrolytes, Debye-Huckel-Onsager equation, Wien effect, Debye-Falkenhagen Effect, Walden’s rule. Ionic velocities, mobilities and their determination, transference numbers and their relation to ionic mobilities, applications of conductance measurement: (i) degree of dissociation, (ii) ionic product of water, (iii) solubility product, (iv) conductometric titrations and (v) hydrolysis constant.

PRACTICALS

1 Determination of partial molar volumes.
(i) Sodium chloride-water system
(ii)Carbon tetrachloride-benzene system
2 Determination of molar mass of phenyl acetic acid by depression in freezing point method using benzene as solvent.
3 Determination of critical solution temperature of the following systems: (i) Phenol-water (ii) Triethyl amine- water (iii) o-methoxy phenol-glycerol, and study the effect of impurities.
4 Study the equilibrium of at least one of the following reactions by distribution method:
(i) I2(aq) + I- → I3- (aq)
(ii) Cu2+(aq) + nNH3 → Cu(NH3)n2+
5 To study changes in conductance in the following systems
(i) strong acid-strong base

(ii) weak acid-strong base and

(iii) mixture of strong acid and weak acid-strong base
6 Study the variation of viscosity of polyvinyl alcohol/poly vinyl pyrrolidone as a function of concentration and calculate average mass number (Mn or Mw)
7 Phase equilibria:
(i) construction of the phase diagram of (a) simple eutectic and (b) congruently melting systems using cooling curves and ignition tube methods.
(ii)construction of liquid-vapour phase diagram.

House Examination question papers of previous years

  1. Physical Chemistry, PaperIX,2005
  2. Physical Chemistry, PaperIX,2006
  3. Physical Chemistry, PaperIX,2007
  4. Physical Chemistry, PaperIX,2008
  5. Physical Chemistry, PaperIX,2009
  6. Computer,PaperXII, 2005
  7. Computer,PaperXII,2007
  8. Computer,PaperXII,2008
  9. Computer,PaperXII,2009

Computers and their applications to Chemistry

  1. Computers introduction
  2. Computers Assignment

For all B.Sc.(Hons)Chemistry Part II assignments see here

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