Homework Help: Chemistry

Posted by Christina on Sunday, November 15, 2009 at 4:54pm.

Which of the following has the greatest entropy?

A.1 mole NaCl (g) at 25C
B.1 mole NaCl (g) at 50C
C.1 mole NaCl (l) at 50C
D.1 mole NaCl (s) at 100C

I know that gases have the highest entropy and the higher the temperature the higher the entropy...so i am leaning toward b. but the temp of d. is double that of b.......so i am not sure of the answer.

Chemistry - DrBob222, Sunday, November 15, 2009 at 7:59pm
True that d is a higher T BUT think how order the solid crystal is versus how random the gas molecules are. I would go with b.

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