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Mr McCondichie

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Unit 3 - Chemistry in Society Topics:

(a) Getting the most from reactants

(b) Controlling the Rate

(c) Chemical Energy

(d) Equilibria

(e) Chemical Analysis

(f) Researching Chemistry

Chemical Analysis

(i) Chromatography

Chromatography is one technique widely used for analysis. Chromatography derives from the Greek word 'Chroma' meaning colour and 'graphia' to mean writing. The results of a chromatography experiment can sometimes be presented graphically, showing an indication of the quantity of substance present on the y-axis and retention time of the x-axis.

Chromatography is a technique used to separate the components present within a mixture. Chromatography separates substances by making use of differences in their polarity or molecular size.

Calculating Rf

Question 1

Question 2

Question 3

(ii) Volumetric analysis

Volumetric analysis involves using a solution of accurately known concentration in a quantitative reaction to determine the concentration of another substance.

Question 4

Question 5

Question 6

Question 7