Molecular Physics | Thermodynamics Answers

Tin melts at 232 under standard atmospheric pressure. Express this temperature in kelvin

A gas occupies a certain volume at 27 degree celcius.If it is heated at constant pressure, its volume is exactly doubled at a temperature o

A gas has a volume of 2.50L. When the sample is cooled in ice water at T = 0.00 Celcius, the volume decreases to 2.45 L. What was the initial temperature of the gas?

van der Waals equation for a real gas Discuss the origin of the constants a and b, and give their respective units.

the predominant mode of heat transfer in solids is

Plot temperature variation of heat capacity for first order and second order phase transitions.

a) Derive Boltzmann relation s=kblnw Discuss its significance.
note s=entropy kb=boltzmen constent
b) Show that the Fermi energy at absolute zero is given by:
Ef=h^2/2m(3N/8PIV)^2/3
c) Compute the Fermi energy and the corresponding Fermi temperature of aluminium
(trivalent metal) using the following data:
P=2.67X10^3Kgm^-3 and M(al)=26.98X10^-3 Kg
note here p is density

a) What is transport phenomenon? How does it arise? Derive an expression for the
coefficient of viscosity of a gas. Discuss its temperature and pressure dependence.

a) Plot temperature variation of heat capacity for first order and second order Phase
transitions.
b) What is Joule-Thomson effect? Derive an expression for Joule-Thomson coefficient for
a van der Waals gas in terms of inversion temperature. Discuss its significance for
liquefication of gases.
c) Calculate the ratio (PV / RT) at the critical point for a gas which obeys the equation of
state p (V − b) = RT exp (− a / RTV ).(note in ques c a means alpha)