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Counting Moles to Find Entropy

Posted: Sat Mar 17, 2018 3:28 pm
by Maria1E
I know that if the number of moles on the product side of a given equation is larger, then entropy increases. My question is, when counting moles to determine this, are we supposed to count the moles of all molecules, including aqueous, liquids, and solids, or simply the ones in the gas phase?

Re: Counting Moles to Find Entropy

Posted: Sat Mar 17, 2018 9:00 pm
by Chem_Mod
Remember that gases generally have higher entropy than liquids, and liquids generally have higher entropy than solids. When predicting the entropy changes for a reaction, comparing moles of gas is usually first priority.

Re: Counting Moles to Find Entropy

Posted: Sun Feb 10, 2019 8:14 pm
by Jacob Bershatski 4C
I think you just count the moles of gas, but I am not 100% certain