If you want to find the value of the acid dissociation constant for a weak acid you look up tables of values. For example, the value of Ka for acetic acid (ethanoic acid) is always tabulated.
But what if you want the value of a base dissociation constant? What if you want the value of Kb for the acetate ion (ethanoate ion)? You won't find this value in a table, you'll have to know how to calculate it!
AUS-e-TUTE has just added new resources to help you understand and apply the concept of acid and base hydrolysis including calculations. AUS-e-TUTE Members should log-in to access the new tutorial, game, test, exam (with worked solutions), and teacher members can access the worksheet wizard to make printable worksheets and quizzes (with answers).
If you are not an AUS-e-TUTE Member, the "free-to-view" tutorial is currently available at
https://www.ausetute.com.au/kakbkw.html
Friday, December 27, 2019
Sunday, December 15, 2019
Acid + Carbonate
Wednesday, December 4, 2019
Lithium-ion batteries
When you walk around having a chat to your friends on your mobile
phone, or watch a show on your tablet, or do your homework on your laptop in a
cosy cafe, have you ever stopped to wonder about the amazing revolution in
chemistry that allows you to do these "every day" things?
Batteries that are small, that can store enough electrical energy
so that they can be used continuously for hours, can be quickly recharged, and
can be discharged and recharged many, many times, are a very recent
development. Without these batteries your life-style would be a lot less
mobile!
What makes these batteries so special?
Find out in the December 2019 issue of AUS-e-NEWS
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