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Path, State Function, Types Of Process is considered one the most difficult concept.
11 Questions around this concept.
U is equal to :
Path and state function
It is the path along which a change of state occurs. It is a path of change of a system from one equilibrium state or another which is usually accompanied by a change in energy or mass.
Types of Thermodynamic Process
1. Isothermal Process
Here the temperature is kept constant during each step of the process. Example,
It is achieved by using a thermostatic control.
Heat can be absorbed or evolved here that is, can be exchanged with the surroundings.
For example, Freezing, melting, evaporation, condensation.
2. Isobaric Process
Here the pressure is kept constant during each step of the process.
For example, Expansion of gas in an open system.
Vaporization and heating of water up to its boiling point occur at the same atmospheric pressure.
3. Isochoric Process
Here volume is kept constant. during each step of the process.
For example, the Heating of substance in a closed vessel (system) or non-expanding chamber.
4. Adiabatic Process
Here no exchange of heat takes place between the system and the surroundings that is, (Q = 0)
It is achieved by insulating the system or in closed insulated containers (thermos).
5. Cyclic Process
Here the System undergoes a series of changes but finally comes back to the initial state.
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Chemistry Part I Textbook for Class XI
Page No. : 162
Line : 1
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