Question 40. For stretched rubber, Entropy
(1) Increases
(2) First increases then decreases
(3) Decreases
(4) First decreases then increases
Dear Student,
As when we stretch the rubber, we apply certain force to stretch the molecule of rubber to align the molecules and hence less randomly arranged so the entropy or the disorderness or randomness of the molecule decreases.
This can be verified as when the rubber is stretched, there is the evolution of heat, hence according to Gibbs energy relation of enthalpy : As enthalpy will become negative the process is an example of exothermic process. And in the exothermic process entropy of the system decreases.
So, the correct option is (3).
Regards.
As when we stretch the rubber, we apply certain force to stretch the molecule of rubber to align the molecules and hence less randomly arranged so the entropy or the disorderness or randomness of the molecule decreases.
This can be verified as when the rubber is stretched, there is the evolution of heat, hence according to Gibbs energy relation of enthalpy : As enthalpy will become negative the process is an example of exothermic process. And in the exothermic process entropy of the system decreases.
So, the correct option is (3).
Regards.