Answer the following problems.

problem1)i) Derive the dimensions of the gas constant, R.

ii) Derive the SI units of pressure.

problem2) State the basic assumptions of the kinetic theory of gases.

problem3) Derive the relationship between critical constants and van der Waals constants.

problem4) Describe the main aspect of the model of the structure of liquids.

problem5) Briefly discuss the intrinsic and extrinsic semiconductors.

problem6) Describe Joule – Thomson effect.

problem7) Derive the relation between Δ_rU and Δ_rT

problem8) Describe the entropy changes for a cyclic process involving isothermal irreversible expansion and reversible compression.

problem9) Discuss the criteria for spontaneity.

problem10) Describe the following terms:

i) Molarity

ii) Molality

iii) Normality

iv) Mole fraction

v) Percentage

problem11) Describe the variation of mutual solubities of nicotine and water with temperature.

problem12) Derive the relation. ΔT_b = K_bm

problem13) describe the phase diagram of water.

problem14) Express the equilibrium constant K_p for the reaction: 2NO (g) + O₂(g) ↔ 2NO₂ (g) in terms of

i) partial pressures and

ii) mole fractions of the gaseous species.

problem15) What is pH scale? What is the concentration of H⁺tons for a solution having pH = 4.5

problem16) describe Faraday’s laws of electrolysis.

problem17) Using suitable diagram, describe the Weston Cell.

problem18) Derive integrated rate Law for first order reactions.

problem19) Describe Stark – Einstein Law of photochemical equivalence.

problem20) Describe the following:

i) Dialysis

ii) Physiosorption