How to determine Q


Moderators: Chem_Mod, Chem_Admin

Andrea_Torres
Posts: 98
Joined: Sun Sep 15, 2019 12:15 am

How to determine Q

Postby Andrea_Torres » Sun Mar 08, 2020 4:59 pm

In the Nernst Equation there is Q and I know that you divide one on top of the other but how do I know which is on top of the other?

Tyler Angtuaco 1G
Posts: 130
Joined: Wed Sep 11, 2019 12:16 am

Re: How to determine Q

Postby Tyler Angtuaco 1G » Sun Mar 08, 2020 5:06 pm

Q is non-equilibrium ratio of products to reactants. So, you'll need to identify which species are the products and which ones are the reactants in the overall cell reaction.

cassidysong 1K
Posts: 100
Joined: Fri Aug 30, 2019 12:15 am

Re: How to determine Q

Postby cassidysong 1K » Sun Mar 08, 2020 8:33 pm

^^^ I agree with Tyler, it depends on the reaction given. Through the reaction given you are able to determine which is the product and which is the recatant.

Rohit Ghosh 4F
Posts: 99
Joined: Thu Jul 25, 2019 12:17 am

Re: How to determine Q

Postby Rohit Ghosh 4F » Wed Mar 11, 2020 12:11 pm

Yes by writing the reactions, you can figure out the products and reactants and put them in the equation.

ABombino_2J
Posts: 102
Joined: Thu Jul 11, 2019 12:15 am

Re: How to determine Q

Postby ABombino_2J » Wed Mar 11, 2020 12:38 pm

When you write out the half reactions and add them to make the complete equation the answer will result in the reaction that you base Q off of.


Return to “Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)”

Who is online

Users browsing this forum: No registered users and 4 guests