Chemical Engineering Thermodynamics I — Winter 2024

What is an adiabatic process? Write the expression for work done during reversible adiabatic process

Distinguish between the terms 'state function' and 'path function'

Derive the first law of thermodynamics for closed system

Define equilibrium and state Phase rule

Explain the physical significance of the triple point and the critical point.

Asteel casting at a temperature 725 Kand weighing 35 kg is quenched in 150 kg oil at 275 K. If there are no heat losses, determine the change in entropy. The specific heat (C ) of steel is 0.88 kJ/kg Kand that of oil is P 2.5 kJ/kg K.

With neat sketch explain PVT behaviour of pure substance using PT and PV diagrams.

How is the Hess’s law of constant heat summation useful in thermo- chemical calculations?

Write fundamental property relations and Maxwell equations for homogeneous fluid of constant composition using Mnemonic diagram.

For the following reaction, the standard heat of reaction at 298K is - 164.987 kJ CO + 4H → 2H O + CH The constants in the heat capacity (J/mol K) are as below; α β× 103 γ× 106 CO 26.75 42.26 -14.252 H 26.88 4.35 -0.332 H O 29.16 14.49 -2.022 CH 13.41 77.03 -18.744 Calculate the standard heat of reaction at 500°C. Use Cp = α + βT + γT2 OR1

Aheat engine operates between a heat source at 700 Kand a heat sink at 300 K. What is the maximum efficiency of the engine?

What is an equation of state? Give the expression for any three equations of state

Derive Clausius – Clapeyron equation from the Clapeyron equation. What are the assumptions involved in the derivation?

Explain adiabatic flame temperature in brief

With suitable example explain reversible and irreversible process.

What is law of corresponding states? Discuss about Pitzer’s modification to law of corresponding states?

Define: (a) The heat of reaction, (b) The standard heat of reaction, (c) The standard heat of formation.

Distinguish between: Extensive properties and intensive properties.

Explain with a schematic diagram the working of an vapor compression refrigeration system

Give any three statements of the Second law of thermodynamics

Write in brief on Third law of thermodynamics

Explain with a schematic diagram the working of an absorption refrigeration system

Show that entropy is a state function.

Show that in multistage compression for minimum work, the inter-stage pressure is the geometric mean of the initial and final pressures

State various liquefaction processes and explain any one process used in the industry