Entropy moles

$\Delta G^{\circ}= \Delta H^{\circ} - T \Delta S^{\circ}$

$\Delta G^{\circ}= -RT\ln K$

$\Delta G^{\circ}= \sum \Delta G_{f}^{\circ}(products) - \sum \Delta G_{f}^{\circ}(reactants)$

nick_pantoja_3G
Posts: 25
Joined: Sat Jul 09, 2016 3:00 am

Entropy moles

In a particular problem on the homework, it gave the values of delta s subscript m, when trying to calculate gibbs free energy, (specifically the change in entropy within the equation) however the chemical equation had 2 moles of it so the solution divided the given delta s values by 2. why is that?

Posts: 27
Joined: Wed Sep 21, 2016 2:56 pm

Re: Entropy moles

This is because Delta S Subscript M is given per mole so you must always divide by the number of moles of the substance to get it to be per 1 mole. :)

nick_pantoja_3G
Posts: 25
Joined: Sat Jul 09, 2016 3:00 am

Re: Entropy moles

THANK YOU SO MUCH! that solved the problem. that makes so much sense.