User:Neeti m/B.Sc.(H)Chemistry-part-II/User:Neeti m/Assignments
Syllabus of B.Sc. (Honours) Chemistry-Part-II
Paper : IX M.Marks : 38
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.
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
- Physical Chemistry, PaperIX,2005
- Physical Chemistry, PaperIX,2006
- Physical Chemistry, PaperIX,2007
- Physical Chemistry, PaperIX,2008
- Physical Chemistry, PaperIX,2009
- Computer,PaperXII, 2005
Computers and their applications to Chemistry
For all B.Sc.(Hons)Chemistry Part II assignments see here