Wednesday, January 25, 2012

Voltaic Cells

Look at this link, it allows you to change metals and solutions and see the direction of electrons and ions, and the voltage that will be obtained.

Setting up different voltaic cells

Thursday, January 19, 2012

Homework Redox

Please finish the redox titration sheet and work out the half equations and the overall equation for the 'breathaliser test' that I showed you.  Suggest reasons why the acidified potassium dichromate test may be inaccurate and research how alcohol is tested for now.

Voltaic Cells

Redox reactions can be used to convert chemical energy to electrical energy. Find out about the first voltaic cell that was made and then look at this video clip to see the basic principles of what happens.

Tuesday, January 10, 2012

Oxidation and Reduction

Hi I hope that you had a great Christmas and New Year. Cran-Montana is sunny with snow at the moment :)

Please look at the following links in preparation for the next topic, Oxidation/reduction.

IB site ox/red

chem guide ox/red