In studying and evaluating the flow of energy into or out of a system, it will be useful to consider changes in certain properties of the system.
These properties include temperature pressure volume and concentration of the system. Measuring the changes in the properties from the initial state to the final state can provide information concerning changes in energy and related quantities such as heat and work.
THE THREE EMPIRICAL LAWS
The study of thermodynamics is based on three broad generalisation derived from well-established experimental results. These generalisation are known as the first, second and third law of thermodynamics.
Scope of thermodynamics
Most of the important laws of physical chemistry including the van't Hoff law of lowering of vapour pressure Phase rule and the distribution law can be derived from the laws of thermodynamics.
It tells whather a particular physical or chemical change can occur under a given set of conditions of temperature, pressure and concentration.
It also helps in predicting how far a physical or chemical change can proceed until the equilibrium conditions are established
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