Question

Explain what entropy is in relation to the second law of thermodynamics?

Answer 1

Step-by-step explanation:

Second law tell us that ,the entropy of reversible process is remain constant while the entropy of ir-reversible process increases.

Entropy of universe is the summation of entropy of system and entropy of surrounding.So we can say that

`\Delta S_(universe)=\Delta S_(system)+\Delta S_(surrounding)`

Entropy can be define as

`ds=\int (dQ)/(T)`

Entropy is point function.This is property of system.Ir-reversibility cause the increase of entropy.

`\oint (dQ)/(T) =0 ,this\ is\ reversible\ process`

`\oint (dQ)/(T) >0 ,this\ is\ impossible\ process`

`\oint (dQ)/(T) <0 ,this\ is\ irreversible\ process`