Question

Every second at a particular waterfall, some 6996 m³ of water falls a distance of 37 m. What is the increase in entropy in kJ/K, per second due to the falling water? (Assume a 23°C environment).

Answer 1

Entropy is measure of randomness or disorder of the system.

Whenever heat is added to the system, it increases molecular motions causing increased randomness in the system.

A system at higher temperature has greater randomness in it than one at lower temperature.Heat added to a system at lower temperature causes greater randomness than when the same quantity of heat is added to it at higher temperature.

This suggest that entropy change is inversely proportional to temperature( T) directly proportional to heat change ( q )

∆S =-(q/T)

In question given values are ,