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April 19, 2014

Homework Help: chem class

Posted by ben on Monday, December 13, 2010 at 10:05pm.

Our teacher told us we had to do problems on our final on Delta G and S...?
all he said is we'd have to plug in numbers from a list and solve. but im very confused.

but the numbers he gave in the example are different from my book, is there soemthing we have to do to the numbesr before plugging it in?

calculate Delta S for
N2 (g) + 3H2 (g) --> 2NH3 (g) at 298 k

he said to do products-reactants

Delta S rxn = 2 (192.5) - 1 (91.6) - 3 (130.7) = -98.7

why does my book show different numbers, did he do something with the given K?

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