Midterm #2b

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Sophie 1I
Posts: 51
Joined: Fri Sep 29, 2017 7:04 am

Midterm #2b

Postby Sophie 1I » Thu Mar 15, 2018 6:31 pm

I'm a little confused on how you get this answer...

C6H12O6 (s) + 6 O2(g) → 6 CO2(g) + 6 H2O(l) ∆H°rxn=-2805 kJ.mol-1
Explain why ∆S°rxn for the above reaction should be positive or negative

the answer is that: 1 mol of solid → 6 mols of liquid ∆S°rxn for the above reaction is positive

Nha Dang 2I
Posts: 53
Joined: Fri Sep 29, 2017 7:07 am

Re: Midterm #2b

Postby Nha Dang 2I » Thu Mar 15, 2018 6:44 pm

Because liquids have more entropy, detS for the reaction is positive as it goes from a lower entropy (solids) to higher entropy (liquids).

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