define thermodynamics and its limitat ions ?
Answers
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It is the branch of science which deals with the study of different forms of energy and the quantative relationship between them.
=> it helps to predict spontaneity of any reaction, extend of reaction before equilibrium is attained and to deduce some important laws of chemistry.
Limitations-
it does not tell anything about the rates of reaction, mechanism of the process ie. path followed and properties of individuals atoms and molecules.
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THERMODYNAMICS:
a system that is in some sense distinctfrom its surroundings.
Thermodynamics is the study of heat, "thermo," and work, "dynamics."
For example,
- the system could be a sample of gas inside a cylinder with a movable piston
- an entire steam engine, a marathon runner
- the planet Earth
- a neutron star
- a black hole
- even the entire universe.
1.ZEROTH LAW
When two systems are each in thermal equilibrium with a third system, the first two systems are in thermal equilibrium with each other.
2.The first law of thermodynamics
or the law of conservation of energy.
The change in a system’s internal energy is equal to the difference between heat added to the system from its surroundings and work done by the system on its surroundings.
3.The second law of thermodynamics.
Heat does not flow spontaneously from a colder region to a hotter region, or, equivalently, heat at a given temperature cannot be converted entirely into work.
4.The third law of thermodynamics.
The entropy of a perfect crystal of an element in its most stable form tends to zero as the temperature approaches absolute zero.
LIMITATIONS:
It does not tell anything about the rates of reaction, mechanism of the process ie. path followed and properties of individuals atoms and molecules.
THANKS...!!!!
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