Question

What is entropy? Explain with examples?​

Answer 1

Answer:

Entropy is a thermodynamic parameter.It has many real life applications.

It is a state function,that is,independent of path unlike heat or work.

Entropy is defined as the degree of randomness or disorder associated with a particular reaction.

It is basically used in third law of thermodynamics which states that entropy of a substance reaches zero when the temperature tends to absolute zero.

Example:- Gas has the highest entropy,followed by liquids and then solids.

Answer 2

Entropy :

$\bigstar$ Entropy is a thermodynamic quantity which is the measure of randomness or disorderness of the molecules of the system.

$\bigstar$ It is unavailable energy of the given system at a given temperature.

$\bigstar$ It is ratio of amount of heat absorbed or evolved to that related temperature.

$\bigstar$ It depends on the temperature and pressure of the state.

$\bigstar$ It is the state function and an extensive property

$\bigstar$ The Entropy of the system increases when it absorbs heat energy.

For example :

Melting of ice and Salt or sugar dissolving.