Materials Thermodynamics — Winter 2019

Derive combined equation of 1st and 2nd law of thermodynamics in terms of internal energy, enthalpy and free energy.

Define system and give example.

Classify system and explain with suitable example.

State 1st law of thermodynamics give its significance. Explain concept proposed by it.

Which equation rules the state of system? State it.

Compare extensive and intensive properties.

Apply Hess law and importance with suitable example.

Based on which law temperature measuring equipment are designed? State it.

Prove that Cp>Cv.

Interpret Kirchoff’s law and importance with suitable example.

Define Specific Heat (C).

Define Cp and Cv.

Derive relationship Cp – Cv = R.

Identify enthalpy (H) and Heat (q).

What is equilibrium? Explain different equilibrium.

What is concept of free energy? Relate different type of free energy.

Interpret activity and fugacity.

Examine possibility to pass on heat from lower temperature to higher temperature. Defend your answer.

Contrast Raoult’s, Henry’s and Sievert’s law.

What is solution and ideal solution?

Explain concept of entropy and 3rd law of thermodynamics.

Demonstrate use of Ellingham diagram in metallurgy and discuss important characteristics.

Calculate free energy change at 500 Kfor following reaction: CuO (s) + H (g)  Cu (s) +H O (g) ΔH0 = -87 kJ/mol and ΔS0 = 47 J/K/mol.500

Calculate standard enthalpy change for Cu S (s) + 2 Cu O (s)  6Cu (l) + SO (g) where are222 Cu S Cu O Cu (l) SO (g)222

(s) ΔHf -86.7 -176.4 0 -278.4 0 1523K kJ/mol

Brass contains 70% Cu, 30% Zn with atomic weight 63.54 and 65.38 respectively. Calculate the composition of brass in atom %. Also calculate the atom fractions of Cu and Zn in above brass.