decreases? Why?
2006-06-21 05:48:53 · 4 answers · asked by smiley 1 in Science & Mathematics ➔ Physics
Second law of thermodynamics: Entropy *always* increases. So if you add salt to water, entropy increases. If you then desalinate the water...entropy increases.
2006-06-21 05:52:02 · answer #1 · answered by eben_brooks 2 · 0⤊ 6⤋
In it's solid crystalized form the salt would be more consentated, both the internal structure of the crystals and they're position in the glass. As it dissolves the crystals break apart and the salt molecules drift away from each other and disperse all over the glass. Thusly while it's solid the salt retains more order then when it's dissolves. So the overall entropy of the system increases.
2006-06-21 05:53:06 · answer #2 · answered by evil_tiger_lily 3 · 0⤊ 0⤋
It increases
Let us assume the salt is NaCl
Initially,
NaCl(solid) and H2O (liquid)
After dissolving
Na+(aq) Cl-(aq) H+(aq) OH-(aq)
Net entropy increases.
2006-06-21 05:55:52 · answer #3 · answered by ag_iitkgp 7 · 0⤊ 0⤋
it increases. in general, there is tendency in nature 4 the entropy 2 increase (at least that's wat they think).
2006-06-21 07:19:54 · answer #4 · answered by Anonymous · 0⤊ 0⤋