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Define Entropy ....

Define Entropy .

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Define energy.

For change in entropy, units are

(A): The entropy of the universe is continuously increasing. (R): All naturally occurring processes are accompanied by increase in entropy.

Is increases in entropy a criterion for spontaneity? Explain.

Considering entropy (s) as a thermo dynamic parameter, the criterion for the spontanity of any process is

(A): An adiabatic process is an isoentropic process. (R ): Change in entropy is zero in case of adiabatic process.

(A): For a process to be spontaneous, the change in free energy must be negative. (R): The change in entropy for a process must always be positive if it is spontaneous.

The process of evaporation of a liquid is accompanised by (A) Increase in enthalpy (B) Increase in entropy ( C) Decrease in Gibbs energy The correct statement(s) is/are

(A) Ozone is thermodynamically unstable than oxygen. (R ) Decomosition of ozone into oxygen results in the liberation of heat and an increase in entropy.