Standard Enthalpy of a Reaction

Moderators: Chem_Mod, Chem_Admin

Steph S 2F
Posts: 10
Joined: Fri Sep 26, 2014 2:02 pm

Standard Enthalpy of a Reaction

Postby Steph S 2F » Fri Jan 08, 2016 10:00 pm

Will there be a situation in which we are told to find the standard enthalpy of a reaction, but one of the products is not in its standard state?
How are we supposed to take the phase change of this product into account?

Posts: 18713
Joined: Thu Aug 04, 2011 1:53 pm
Has upvoted: 631 times

Re: Standard Enthalpy of a Reaction

Postby Chem_Mod » Fri Jan 08, 2016 10:41 pm

The standard enthalpy of anything that is not in the standard reference state would be given in the back of the book with a nonzero value. For example, Carbon(graphite) and N2(gas) are standard states and have enthalpy zero. But Carbon(diamond) and N2(liquid) would not be zero.

Return to “Heat Capacities, Calorimeters & Calorimetry Calculations”

Who is online

Users browsing this forum: No registered users and 2 guests