2007-11-06 02:38:25 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
Entropy means disorder. In absence of any interaction entropy grows. But if you use energy, you can diminish the entropy of a system
2007-11-06 02:46:31 · answer #1 · answered by maussy 7 · 0⤊ 0⤋
Yes. Any system which becomes more "ordered" becomes less entropic. If you take a gas and condense it to a solid, you're removing randomness, which gives an entropy value with an opposite sign.
Entropy is a function of the Gibbs Free Energy equation, which is dG = dH - TdS, with S being the entropy term. There are cases when you have a negative dS and a positive dS, so it the entropy of the system sometimes gains and sometimes loses.
2007-11-06 02:50:08 · answer #2 · answered by Nethicus 2 · 2⤊ 0⤋
It cannot be reversed in a universal sense. However, you can input energy to decrease entropy in a smaller system.
2007-11-06 02:47:29 · answer #3 · answered by Anonymous · 0⤊ 0⤋