Answer to Question #113314 in Physical Chemistry for jamia

Question

Is it more difficult to heat things up or make them cold?

Answer 1

The Second Law of Thermodynamics states: the entropy of a closed system does not decrease with time. Colloquially, it means that a system that is initially ordered (with, for example, separation between hot and cold) will tend toward disorder if left alone. Creating a cold region is equivalent to creating a region of higher order, or lower entropy; such a process is statistically unlikely, so it's hard to do.

Answer: it is more difficult to heat things up