Different Types Of Thermodynamic Process At A Glance

S.No.	Change or name of the process	Isobaric	Isochromic	Isothermal	Adiabatic
1.	Definition	P=Constant	V=Constant	T=Constant	a) Q=Constant b) Entropy S = Constant
2.	dQ	1. For solids dQ = mcpdT For gases ncvDt 2. For change in state dQ = mL	1. For solids dQ = mcvdT For gases ncvdT	dQ = dW	Zero
3.	dU	1. dQ-pdV 2. dQ-nRdT	dQ	Zero	-dW
4.	dW	1. PdV 2. nRdT	Zero
5.	Equation of state				PVγ=constant TVγ-1=constant P1-γTγ=constant
6.	Slope of p-v curve	Zero
7.	Law	Charle's law	Gay-lussac's law	Boyle's law	Poisson's law
8.	Form of First laws	dQ=dU+dW =ncpdT+PdV	dQ=dU=ncvdT	dQ=dW=dV	-dU=dW
9.	Bulk modulus	Zero	Infinity	-p	-γp
10.	Result of maximum work	Maximum	Zero	Less from isobaric process but greater form adiabatic process	Minimum but not zero

Example :

A cylinder with a movable piston contains 3 moles of hydrogen at standard temperature and pressure. The walls of the cylinder are made of a heat insulator, and the piston is insulated by having  a pile of sand on it. By what factor does the pressure of the gas increase if the gas is compressed to half its original volume?

Ans: As no heat is allowed to be exchanged, the process is adiabatic.