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Acids and Bases Ice Box

Posted: Sat Jan 18, 2020 4:16 pm
by EthanPham_1G
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?

Re: Acids and Bases Ice Box

Posted: Sat Jan 18, 2020 4:21 pm
by Kaitlyn Ang 1J
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.

Re: Acids and Bases Ice Box

Posted: Sat Jan 18, 2020 4:56 pm
by Bryan Chen 1H
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.

Re: Acids and Bases Ice Box

Posted: Sat Jan 18, 2020 5:27 pm
by peteryim
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.

Re: Acids and Bases Ice Box

Posted: Sun Jan 19, 2020 9:38 am
by Alison Trinh 1E
What is the purpose of an ICE Box?

Re: Acids and Bases Ice Box

Posted: Sun Jan 19, 2020 1:19 pm
by Andres Merlos 2L
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.