Ka stuff

Moderators: Chem_Mod, Chem_Admin

Posts: 61
Joined: Fri Sep 28, 2018 12:17 am

Ka stuff

Postby 305174946 » Sat Mar 16, 2019 7:18 pm

Sorry, I wasn't sure where to put this question for chem 14b but for Ka and Kb will we be expected to know the general equations including HA and A?

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

Re: Ka stuff

Postby Chem_Mod » Sat Mar 16, 2019 7:21 pm

HA and A- are just examples of an acid/base reaction, where HA is any acid and A- is its conjugate base. Know that Ka and Kb are the equilibrium constants for acids and bases respectively and that strong acids/bases do not have Ka/Kb because they dissociate completely.

Posts: 68
Joined: Thu Jul 27, 2017 3:00 am

Re: Ka stuff

Postby 404975170 » Sat Mar 16, 2019 7:23 pm

If you are talking about the equation Ka= [H3O+][A-]/[HA] I don’t think it necessarily has to be memorized but if you just think about it like other problems with the equilibrium constant, K, it’s just products over reactants which you can tell from the reaction of the acid you are given.

Return to “Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions”

Who is online

Users browsing this forum: No registered users and 1 guest