Define the following:
(a) Spontaneous Process:
A process which is capable of proceeding in a particular direction without any external source of energy. Spontaneity of a process determines whether a process can occur or not.
Entropy is a measure of molecular randomness or disorder. It describes the positions or energy levels available to a system in a given state. It is an important part of thermodynamics which describes the disorganized energy of a system.
(c) Positional Probability
It is the probability of occurrence of particular arrangement of a given state and it depends upon the number of arrangements in space.
That part of universe which is under observation or analysis is a system.
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