From the large sheet of chromatography paper, cut a strip, which is 20mm less than the height of the jar. Measure the height of the glass jar into which the chromatography will be carried out. Repeat the extraction process for each pile of ‘Smarties’. Label the tube and its contents with name of the ‘Smarties’ colour. Decant the coloured solution into a clean dry test tube. Agitate the test tube and its contents for 2 minutes until the colour appears in the aqueous phase. Tip one of the piles into a small clean test tube and to the ‘Smarties’ add a small quantity of cold distilled water (approx 1cm3). Sort the ‘Smarties’ into piles of the same colour. Pack of assorted food colours (red, yellow, green and blue).0.1%(w/v) aqueous sodium chloride solution (mobile phase).Sheet of chromatography paper, or large filter paper.6 sharpened wooden sticks (ie toothpicks).Large glass jam jar with cover (eg flat piece of plastic or glass).Separation of colours using paper chromatography
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