What is the correct answer?


The expression for entropy change given by, ΔS = - nR ln (P2/P1), holds good for

A. Expansion of a real gas

B. Reversible isothermal volume change

C. Heating of an ideal gas

D. Cooling of a real gas

Correct Answer :

B. Reversible isothermal volume change

Related Questions

If two pure liquid constituents are mixed in any proportion to give an… What is the degree of freedom for two miscible (non-reacting) substances… A cylinder contains 640 gm of liquid oxygen. The volume occupied (in litres)… The compressibility factor for an ideal gas is 1. Its value for any other… As the temperature is lowered towards the absolute zero, the value of… The relation connecting the fugacities of various components in a solution… If the heat of solution of an ideal gas in a liquid is negative, then… Heat requirement for decomposition of a compound into its elements is… Those solutions in which there is no volume change upon mixing the components… Which of the following processes cannot be made reversible even under… Ideal gas law is applicable at Change of state namely evaporation condensation, freezing and melting… Generation of heat by friction is an example of a/an __________ change. As the entropy of the universe is increasing, day by day, the work producing… Standard temperature and pressure (S.T.P.) is A solute distributes itself between two nonmiscible solvents in contact… In reactions involving solids and liquids (where change in volume is negligible),… Melting of ice is an example of an __________ process. The expression, nCv(T2 - T1), is for the __________ of an ideal gas. In case of an __________ process, the temperature of the system increases. What is the ratio of adiabatic compressibility to isothermal compressibility? If the internal energy of an ideal gas decreases by the same amount as… Heating of water under atmospheric pressure is an __________ process. Pick out the extensive property out of the following. The four properties of a system viz. P, V, T, S are related by __________… Claude gas liquefaction process employs cooling In an ideal solution, the activity of a component equals its During the phase transition, __________ changes. Work done in an adiabatic process between two states depends on the A cyclic engine exchanges heat with two reservoirs maintained at 100 and…