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Year 12 exploring Redox reactions

May 17, 2018

On the first day back of a new year for Assumption College English Program students, the year 12 chemistry classes got straight down to business in a colourful way, exploring Oxidation and Reduction reactions in the laboratory. Students first Identified that sugar is able to act as a reducing agent in the well known Benedict’s test by reducing Copper II ions, which have a blue colour in solution, to Copper I ions indicated by the formation of orange/red cuprous oxide. They then did the famous chameleon reaction using permanganate VII ions and sugar in a basic solution. Finally they had a puzzle to work out matching the different oxidation states of manganate and manganese ions with the different colours observed. It was a big challenge for the first day back but the students rose to it with enthusiasm.

Written by Michael Lams