Question: Does the isothermal expansion of a real gas increase, decrease, or have no effect on the entropy of the universe? Explain. Entropy Entropy is a physical concept characterized in the theory of thermodynamic systems where the equilibrium of the macr...
This is the basic way of evalulating ΔS for constant-temperature processes such as phase changes, or the isothermal expansion of a gas. For processes in which the temperature is not constant such as heating or cooling of a substance, the equation must be integrated over the required temperatu...
What is the second law of thermodynamics and how does it pertain to entropy? (a) What is the precise definition of entropy? (b) What is the significance of entropy being a state function? Does the isothermal expansion of a real gas increase,...
During an isothermal reversible expansion of an ideal gas, its Text Solution An ideal gas undergoes isothermal expansion at constant pressure . Dur... 01:34 An ideal gas system undergoes an isothermal process, then the work don... Text Solution During the isothermal expansion of an ideal gas ...
(2) isothermal process:,S=nRIn(V2/V1) (3) adiabatic free expansion: the process is irreversible, Q=0,,Eint=0, T2=T1(V1)V2. We can find,S by evaluating,dQ/T over a reversible isotherm process (has the same initial and final state as adiabatic free expansion),,S=nRIn(V2/V1)...
热力学第二定律、熵the second law of thermodynamics, entropy
The change in internal energy when 2.0 mole of an ideal gas at 25∘C are compressed isothermally and reversibly from 1 bar to 2 bar is View Solution The amount of work done by 2 mole of an ideal gas at 298 K in reversible isothermal expansion from 10 litre to 20 litre is View Solu...
The relationship between entropy and reversible heat and temperature is developed using a simple cycle, in which an ideal gas is subjected to isothermal expansion and compression and heated and cooled between states. The procedure is easily understood by students if they have knowl...
A single defective fluorite structure (Sm0.2Eu0.2Tb0.2Dy0.2Lu0.2)2Zr2O7 was established, which exhibited ultralow thermal conductivity, large coefficient of thermal expansion, and excellent mechanical properties. Pyrochlore-type HEO, namely (La0.2Nd0.2Sm0.2Eu0.2Gd0.2)2Zr2O7, has also been ...
According to this concept, entropy generation equal to zero (reversible process) corresponds to the highest quality, and the quality of energy transformation decreases with increase of entropy generation. They used the entropy generation caused by finite temperature differences, scaled by the maximum ...