Discuss the variation of free energy change with Temperature and Pressure.
admin The variation of free energy change with change in temperature and pressure is discussed below: Consider the following equation: G = H – TS …………………………………….……. (1) As H = U…
2025
Explain the concept of Fugacity?
Lewis introduced a concept by making use of free energy function G to represent the actual behavior of real gases which is very much different from the concept of ideal…
Three real heat engines have the same thermal efficiency and are connected in series. The first engine absorbs 2400 kJ of heat from a thermal reservoir at 1250 K and the third engine ejects its waste of 300 kJ to a sink at 150 K. determine the work output from each engine.
Data given: Q1 = 2400 KJ Q4 = 300 KJ For engine E1, Efficiency η1 = (Q1 – Q2) / Q1 = 1 – (Q2 / Q1) I.e. Q2 /…
Using an appropriate cyclic rule and an appropriate Maxwell relation, show that (∂P / ∂V)S = γ (∂P / ∂V)T where γ = CP / CV
We know that cyclic is given as: (∂P / ∂V)S (∂V / ∂S)P (∂S / ∂P)V = -1 (∂P / ∂V)S = – / = / = -/ = –…
Explain Clapeyron-Clausius Equation and also give its derivation
Clapeyron discovered an important fundamental equation which helps in finding the extensive application in one component, two phase system and by Clausius from second law of thermodynamics. Hence this fundamental…
Derive the Gibbs-Duhem Equation and give its Applications?
Gibbs-Duhem Equation The Gibbs free energy can be defined in two different ways once by subtracting off combinations of entropy S, enthalpy H and temperature T and other as a…
A mass ‘m’ of fluid at temperature T1 is mixed with an equal amount of the same fluid at temperature T2. Prove that the resultant change of entropy of the universe is: [2 mc ln (T1 + T2) / 2]/[(T1 T2)1/2]and also prove that it is always positive.
Mean temperature of the mixture = (T1 + T2) / 2 Thus change in entropy is given by: ∆S = S2 – S1) = mc (T1 + T2)/2∫ T1 (dT…
Define Thermodynamics?
Thermodynamics is a science and, an important engineering tool used to describe processes that involve changes in temperature, transformation of energy, and the relationships between heat and work. Thermodynamics where…
Explain thermodynamics system and there Types
In general, Thermodynamics involves the study of various systems. A system is a collection of objects, and there are a lot of hurdles in the way it is defined. However,…
Explain thermodynamics state of a system and state variable?
A thermodynamic state is a set of values of properties of a thermodynamic system that must be specified to reproduce the system. The individual parameters are known as state variables,…