JEE Chemistry - Thermodynamics Cheat Codes | Luv Mehan Sir | IIT JEE 2020 | JEE Main/Advanced 2020 | Thermodynamics | JEE Main Chemistry | IIT JEE 2020 | JEE Main 2020 | IIT JEE Mains 2020 | JEE Exam | thermodynamics chemistry
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Meet Luv Mehan Sir enlightens you with today's topic of "Thermodynamics Cheat Codes" in an effective way.
Thermodynamics is a branch of chemistry which deals with the exchange in heat energy during chemical and physical changes. System: It is a part of the universe which is under thermodynamic consideration. ... For example, pressure, volume, temperature, moles, mass, enthalpy, internal energy, entropy, and Gibb's free energy.
The science of thermodynamics is governed by four significant equations which are known as the zeroth law, the first law, the second law, and the third law. These laws have been framed after some of the most common and unquestionable observations. Hence they are some axiomatic rules.
The zeroth law of thermodynamics
is a statement of thermal equilibrium of bodies. It states that if two bodies are in thermal equilibrium with any third body, then they are in thermal equilibrium with each other as well.
Zeroth law of thermodynamics: If two bodies are in thermal equilibrium with some third body, then they may also be in equilibrium with each other.
First law of thermodynamics: Energy can neither be created nor be destroyed but can be transferred from one form to another. The first law of thermodynamics
is derived from the concept of conservation of energy – “Energy can neither be created nor destroyedâ€. It brings a relation between the various forms of energy and brings into the three forms of energy namely the internal energy, the heat supplied to the system and work done by the surroundings on the system.
Second law of thermodynamics:
Total energy of an isolated system can never decrease over time. The second law of thermodynamics
is related to the degree of randomness of an isolated system–which is termed the entropy of the system. As per the second law of thermodynamics, the entropy of an isolated system is always increasing. Any process which leads to an increase in the randomness or a decrease in the packing strength or lattice energy of the system is spontaneous.
Third law of thermodynamics: The entropy of perfect crystals of all pure elements and compounds is zero at absolute zero temperature.
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