Acids and Bases Ice Box

EthanPham_1G
Posts: 104
Joined: Sat Jul 20, 2019 12:17 am

Acids and Bases Ice Box

When we make the ice box for acids and base problems, how do we know if we need to use Ka or Kb to solve for x?

Kaitlyn Ang 1J
Posts: 116
Joined: Fri Aug 09, 2019 12:17 am
Been upvoted: 1 time

Re: Acids and Bases Ice Box

If one of the products in the reaction is H3O+, use Ka because the original compound given was an acid.
If one of the products in the reaction is OH-, use Kb because the original compound given was a base.

Bryan Chen 1H
Posts: 58
Joined: Mon Jun 17, 2019 7:24 am

Re: Acids and Bases Ice Box

i suggest writing out the chemical reaction taking place and looking at the reactants side. If its like a base dissociating, then use kb, for example.

peteryim
Posts: 54
Joined: Sat Sep 07, 2019 12:17 am

Re: Acids and Bases Ice Box

In summary of the above comments, using Ka or Kb is situational. However, many times the question will give you the constant that you need to answer the question.

Alison Trinh 1E
Posts: 104
Joined: Thu Jul 25, 2019 12:16 am

Re: Acids and Bases Ice Box

What is the purpose of an ICE Box?

Andres Merlos 2L
Posts: 46
Joined: Wed Sep 18, 2019 12:17 am

Re: Acids and Bases Ice Box

Alison Trinh 1E wrote:What is the purpose of an ICE Box?

It is a step-by-step procedure that is used to put concentrations in terms of x, which you can then solve using approximation or the quadratic formula. You can then find a various amount of information with x such as KA, pH, etc.