Chemical Forums

Chemistry Forums for Students => Physical Chemistry Forum => Topic started by: mishka on December 05, 2016, 02:44:58 PM

Title: Problem with calculating enthalpy, bizzare reactions..?
Post by: mishka on December 05, 2016, 02:44:58 PM

Hi! I have problem with calculating enthalpy, well in fact with balancing reaction. I have this reactions:
https://scr.hu/Rn32wm

and I am supposed to calculate enthalphy of reaction:
Fe(s) + Cl2(g) -> FeCl2(s)

Can anyone help me?

Title: Re: Problem with calculating enthalpy, bizzare reactions..?
Post by: Borek on December 05, 2016, 06:25:26 PM

All these reactions are balanced, no idea where is your problem.

Title: Re: Problem with calculating enthalpy, bizzare reactions..?
Post by: mishka on December 06, 2016, 01:12:29 PM

I was trying to calulate enthalpy using linear combination, but I can't get rid off aq from left side of equation..:

Title: Re: Problem with calculating enthalpy, bizzare reactions..?
Post by: mishka on December 06, 2016, 05:17:33 PM

Ok, I just realised aq is irrelevant, you can delete this topic. :)

Title: Re: Problem with calculating enthalpy, bizzare reactions..?
Post by: mjc123 on December 07, 2016, 04:47:01 AM

aq isn't exactly irrelevant, but it is non-stoichiometric - it simply means "dissolve in water"