Question

Compare and contrast energy and entropy in a closed system. Provide at least one example of how we understand entropy. Also provide the two ways we define change in entropy in a closed system.

Answer 1

T. ?S = ?H
T = absolute temperature

?H = change in enthalpy(energy)

?S = change in entropy

from above equation

an increase in the enthalpy(energy) of a system causes an increase in its entropy

EXAMPLE OF ENTROPY

entropy means randomness or disorder of molecules in a system

example:- liquid and gas

gas has more entropy then liquid because gas has more randomness molecules then liquid

1ST WAY OF CHANGE IN ENTROPY

if phase transition (ex: ice to water) is happens then the entropy will change

2ND WAY OF CHANGE IN ENTROPY

if system changes from one temperature to another temperature(ex:- water at 400k to water at 300k) then entropy will change