## HW 51

Jose A Guerrero 1F
Posts: 6
Joined: Wed Oct 01, 2014 3:00 am

### HW 51

What piece of information dictates the temperature used in the solution manual for 298K when making the substitution into ΔnRT?

Kayla Denton 1A
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Joined: Fri Sep 26, 2014 2:02 pm

### Re: HW 51

I think we just have to assume (unless otherwise stated) that a reaction occurs at room temperature, 25 degrees C or 298K.

Neil DSilva 1L
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Joined: Fri Sep 26, 2014 2:02 pm

### Re: HW 51

$\Delta H$ values are determined by taking the difference in enthalpies of the products and reactants, which are both measured at 298 K (which is a stadard condition, $25^{\circ }C$). You can just assume that is the temperature when given a $\Delta H$ value. (There is a note about this on pg. 261 of the text book; it essentially says the same thing.)

Jose A Guerrero 1F
Posts: 6
Joined: Wed Oct 01, 2014 3:00 am