Thursday, 14 April 2011

Chemistry is Kool

The students in chemistry this week had a two hour analytical chemistry workshop.

In the first activity students separated different coloured dyes in grape Kool-Aid using column chromatography.

The stationary phase in the column was made of Sep-Pak C18 cartridge, which is very non-polar. Water, and different percentages of isopropyl alcohol were passed through the column. The ingredients of grape Kool-Aid were separated in the order of citric acid, red dye and blue dye.  The students were asked about the polarity of the solutions.

Thank you to Brent Banham Science Communication Officer at flinders University for providing the workshop for the students.

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