Bond Energies Final 2013 #1

Moderators: Chem_Mod, Chem_Admin

Aliya Habib 1L
Posts: 20
Joined: Fri Sep 25, 2015 3:00 am

Bond Energies Final 2013 #1

Postby Aliya Habib 1L » Fri Mar 17, 2017 5:35 pm

So even if h202 is being broken down into 02 and h20, are 02 and h20 considered reactants and thus negative in solving for dH?
Basically, how are reactants and products being determined here and how do we determine which set of bonds are positive and negative?

Posts: 18400
Joined: Thu Aug 04, 2011 1:53 pm
Has upvoted: 435 times

Re: Bond Energies Final 2013 #1

Postby Chem_Mod » Sat Mar 18, 2017 1:27 am

Delta H of reaction is always relative to the reaction you are working with. So if the reaction specifies breakdown of H2O2 into O2 and H2O, your products should be O2 and H2O, and your reactant should be H2O2. I don't have a picture of the problem/solution so I am working with the information listed here.

Miguel Velasco 2J
Posts: 40
Joined: Fri Sep 29, 2017 7:07 am
Been upvoted: 1 time

Re: Bond Energies Final 2013 #1

Postby Miguel Velasco 2J » Sun Jan 21, 2018 8:05 pm

Exactly. Since 02 and H20 were the results of your reaction, they are the products.

Return to “Calculating Standard Reaction Entropies (e.g. , Using Standard Molar Entropies)”

Who is online

Users browsing this forum: No registered users and 1 guest