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What is NOT the cause of non-equilibrium of the system:
Change of intensive properties within the system at a large extent
Presence of unbalanced forces between the system and surroundings
Constant chemical composition the system with respect to time
None of the above
Answers (1)
As we have learnt,
Thermodynamic Equilibrium -
Thermodynamic Equilibrium
A system in which the macroscopic properties do not undergo any change with time is called thermodynamic equilibrium.
If a system is heterogeneous and it is in equilibrium the macroscopic properties in the various phases remain unchanged with time.
Types: It is of three types-
(i) Mechanical Equilibrium
Here no mechanical work is done by one of the systems on another part of the system and it is possible if the pressure remains the same throughout the system that is, there is no flow of matter from one part to another
(ii) Thermal Equilibrium
There is no flow of heat from one part to another that is, the temperature is constant.
(iii) Chemical Equilibrium
There is no change in the composition of any part of the system with time.
-
As we have learned the system is in thermodynamic equilibrium only if it is in thermal, chemical and mechanical equilibrium. Constant chemical composition is referring for the system to be in chemical equilibrium, hence it is NOT the cause of the non-equilibrium of the system
Hence, option number (3) is correct
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