PG TRB Chemistry 2019 - Unitwise quesions and answers - Unit 9
Questions from the Nineth unit of the #PGTRB Chemistry 2019 with answers
Questions
1.Langmuir - Rideal mechanism is applicable to :
2. The acidity function for the following reaction ROH + H+ → R+ + H2O is given by :
3. At 258C, the degree of dissociation of 0.1 M weak acid was found to be 0.5. The dissociation constant of the acid is:
4. The equivalent conductance of 0.05 N HCl acid was found to be 0.5 x 10-4 mho m2 at 1000 K. Its degree of dissociation at this concentration was 0.2, then the equivalent conductance at infinite dilution was
5. The Conductance of KI in water follows Onsagar equation but KI in acetone deviates from Onsagar equation. This is because:
6. When the observed equivalent conductance of KCl were plotted against the square root of corresponding concentration, the straight line obtained had a slope 0.5 and if λ0 is equal to 0.01 and B in the Debye - Huckel-Onsager is equal to 0.2, then the value of A is :
7. The Eo value for the following cell is
8. Find the emf of the following concentration cell Pt, H2 (10 atm), HCl, H2 (100 atm); pt
9. According to Gouy - Chapmann model of electrical double layer, which is true?
10. When overpotential is large but negative, Tafel equation is :
11. The slope of the plot of applied potential vs log (i/ id-i) was found to be equal to 0.0295, in the following reaction Ox + ne → Red. The number of electrons gained by the reactant is:
Almost all the questions are from the following books
Physical Chemistry by Puri Sharma Pathania
Chemical Kinetics by Laidler
To buy books follow this link:
Physical Chemistry by Puri Sharma Pathania: amzn.to/2Xe0c3g
Physical Chemistry by Atkins: amzn.to/2EqJmr8
Chemical Kinetics by Laidler :
PGTRB Unit 9 syllabus
Theories of reaction rates - simple collision theory - absolute reaction rate theory (ARRT) - Reaction co-ordinate - Potential energy surfaces. Hammett - Taft equation - Hammett acidity function - Acid base catalysis Bronsted relation Enzyme catalysis - Michaelis Menton Law - influence of PH and temperature. Surface phenomenon - Heterogeneous catalysis - Absorption isotherms. Electrolytic conductance - applications - solubility product - Interionic attraction theory - Debye - Huckel - Onsager
equation - equivalent conductivity of electro lytes.
Electro potentials - Electrochemical cells - electrode - electrolyte interface - electrical double layer electro capillary phenomena - electro kinetic Phenomena - Membrane potential - Polarisation - over potential - Polarography - concentration polarization - electro chemical polarization - Butler - Volmer equation.
Unitwise questions from the PGTRB #Chemistry conducted in 2019 by TN TRB.
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