Hi,
Can someone help with this question?
Do you solve it the same way you would if you were given Ka?
Achieve #4 (Due Week 3)
Moderators: Chem_Mod, Chem_Admin
-
- Posts: 106
- Joined: Fri Sep 24, 2021 6:55 am
Re: Achieve #4 (Due Week 3)
Hi,
Yes you do.
We need to find HB and them from there we could find pOH and then eventually pH.
Yes you do.
We need to find HB and them from there we could find pOH and then eventually pH.
-
- Posts: 101
- Joined: Fri Sep 24, 2021 5:58 am
- Been upvoted: 1 time
Re: Achieve #4 (Due Week 3)
Yup, you can solve for the concentration the same way as if you were given the Ka. However, you have to remember that you are finding the pOH, so to subtract 14 - pOH to find the pH.
-
- Posts: 102
- Joined: Fri Sep 24, 2021 5:23 am
Re: Achieve #4 (Due Week 3)
Yes it would be the same way. Except there's a different rule for x being small enough to ignore. For weak bases it's if the initial concentration is more than 1000 times greater than Kb.
-
- Posts: 100
- Joined: Fri Sep 24, 2021 7:31 am
Re: Achieve #4 (Due Week 3)
Hi! Yes you would solve the same way as if you were given Ka. You would still set up an equation to solve for x using an ICE table and then your x value can be used to solve for pOH. Once you have pOH, you can find the pH by subtracting your pOH value from 14.
-
- Posts: 100
- Joined: Fri Sep 24, 2021 5:41 am
Return to “Equilibrium Constants & Calculating Concentrations”
Who is online
Users browsing this forum: No registered users and 21 guests