Moderators: Chem_Mod, Chem_Admin

Posts: 47
Joined: Fri Sep 28, 2018 12:26 am


Postby 805132275 » Sun Mar 03, 2019 1:00 pm

For the question regarding pH, which equation and steps were necessary to determine the answer?

Jonathan Zhao 4H
Posts: 57
Joined: Fri Sep 28, 2018 12:26 am

Re: TEST 2

Postby Jonathan Zhao 4H » Sun Mar 03, 2019 1:23 pm

For the pH question, I think you had to use the Van't Hoff equation, which was given on the equation sheet. This equation relates the change in the equilibrium constant with the change in temperature. Using this equation, you can find the new equilibrium constant as a result of the change in temperature and then calculate pH from there.

Ahmed Mahmood 4D
Posts: 72
Joined: Fri Sep 28, 2018 12:28 am

Re: TEST 2

Postby Ahmed Mahmood 4D » Sun Mar 03, 2019 10:47 pm

The Van't Hoff equation, provided on the equation sheet, was necessary for this. That being said, I did another method where I calculated the K using the relation between E cell and gibbs free energy and got the same answer, but I do not believe that that was the way you were supposed to calculate the pH since enthalpy was given.

Posts: 60
Joined: Fri Sep 28, 2018 12:26 am
Been upvoted: 1 time

Re: TEST 2

Postby 705170809 » Sun Mar 03, 2019 10:55 pm

How do you find the pH from K?

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 1 guest