Why there is no work done in free expansion?
Free Expansion of a Gas. We know from the first law for a closed system that the change in internal energy of the gas will be equal to the heat transferred plus the amount of work the gas does, or . Since the gas expands freely (the volume change of the system is zero), we know that no work will be done, so W=0.
Is reversible expansion work a state function?
Reversible work is done by conservative forces and so doesn’t depend on the path. hence at least for an isotherm, reversible work only depends on internal energy and entropy, both of which are state functions.
Is h/ts a state function?
E and G(H-TS) are state functions.
Is s state function?
The total heat added in both the processes is different. Infinitesimal change in entropy is defined as ∫(dQ/T). Along the isotherm, the temperature remains constant. The state A has a definite value for the state function entropy, S(A).
Why is entropy denoted by S?
Explanation: It is generally believed that Rudolf Clausius chose the symbol “S” to denote entropy in honour of the French physicist Nicolas Sadi-Carnot. His 1824 research paper was studied by Clausius over many years.
Why is temperature a state function?
Temperature is a state function as it is one of the values used to define the state of an object. Furthermore, temperature is dependent on the final and initial values, not on the path taken to establish the values. As a result, volume is a state function because it is not dependent on the object’s path or history.
Is free energy a state function?
The Gibbs free energy of a system at any moment in time is defined as the enthalpy of the system minus the product of the temperature times the entropy of the system. The Gibbs free energy of the system is a state function because it is defined in terms of thermodynamic properties that are state functions.
Why Q minus W is not a state function?
Heat (q) and work (W) are not state functions being path dependent. A state function is the property of the system whose value depends only on the initial and final state of the system and is independent of the path. Heat (q) and work (W) are not state functions being path dependent.
Which of the following is state function of thermodynamics?
A state function describes the equilibrium state of a system, thus also describing the type of system. Internal energy, enthalpy, and entropy are examples of state quantities because they quantitatively describe an equilibrium state of a thermodynamic system, regardless of how the system arrived in that state.
Which one of the following quantities is not a state function?
Answer. Answer: Work is not state function as it doesn’t depend on the path followed.
Which of the following are a state function?
Answer: (1) List of state functions is pressure, temperature, volume, mass, internal energy, Gibb’s free energy, entropy.
Which statement is correct for third law of thermodynamics?
The Third Law of Thermodynamics can be stated in various ways, one of which is: The entropy of a perfect crystal at absolute zero is exactly equal to zero.
Which of the following is a state function and also an extensive property?
Which among the following state functions is an extensive property of the system? Volume is an extensive property because it depends upon the amount of the substance.
Which one of the following is a state function but not extensive property?
Grade 9. The internal energy is a state function of a system, because its value depends only on the current state of the system and not on the path taken or processes undergone to prepare it. It is an extensive quantity.
Which of the following is not state function property?
Value of enthalpy, internal energy and entropy depend on state and not path followed, so they are state functions. Work is not state function because its value depends on path followed.