Today in class, we have done our 3rd lab, purpose of this lab was to know separation technique called chromatography. In the chromatography, mixtures are separated according to the different solubilities.
In our lab, we used paper chromatography and water to separate food colouring mixture, green colouring mixture,and unknown mixture. Water carries mixture up a strip of paper, then we measure the length of solvent front(d2) and solute front (d1). We divide d1 by d2 to get ratio of fronts(Rf)
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