Sign of delta G
Moderators: Chem_Mod, Chem_Admin
-
- Posts: 104
- Joined: Wed Sep 18, 2019 12:21 am
Sign of delta G
Instead of using the sign of delta G to determine which way a reaction can proceed. Could we also just figure out if Q is less then or more then K and decide that way?
-
- Posts: 56
- Joined: Fri Aug 30, 2019 12:16 am
- Been upvoted: 1 time
-
- Posts: 54
- Joined: Wed Nov 14, 2018 12:22 am
Re: Sign of delta G
It would make sense to do this, but I guess it also depends on what information is given within the problem. You would need enough information to calculate the K value if it was not already given and that could take more time than you have.
-
- Posts: 102
- Joined: Fri Aug 09, 2019 12:15 am
Re: Sign of delta G
I agree, it depends on if they give you concentrations (use K vs Q) or information to find enthalpy and temperature (use G).
-
- Posts: 103
- Joined: Fri Aug 09, 2019 12:15 am
Re: Sign of delta G
There are many different methods to determine whether a reaction will proceed to favor reactants or products, or if it is at equilibrium: deltaG and comparing K to Q are two of the many. It all depends on what type of problem it is and what information is given, but yes these are definitely two methods to determine the direction of a given reaction.
-
- Posts: 29
- Joined: Mon Jan 06, 2020 7:57 am
Re: Sign of delta G
Yes, if you have enough information you should be able to use the values of Q and K.
-
- Posts: 49
- Joined: Wed Nov 14, 2018 12:20 am
-
- Posts: 102
- Joined: Thu Jul 11, 2019 12:15 am
Re: Sign of delta G
I believe you can, but just to be safe I would use the sign of G to determine the answer for that.
Re: Sign of delta G
Sign of delta G may be the most relevant info as info relating to K may not be available.
Return to “Gibbs Free Energy Concepts and Calculations”
Who is online
Users browsing this forum: No registered users and 5 guests