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Question 17N.3.SL.TZ0.02b

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Date November 2017 Marks available [Maximum mark: 1] Reference code 17N.3.SL.TZ0.02b
Level SL Paper 3 Time zone TZ0
Command term State Question number b Adapted from N/A
b.
[Maximum mark: 1]
17N.3.SL.TZ0.02b

Thin-layer chromatography was carried out on red and brown algae to discover what photosynthetic pigments they contained. The results were compared with the known pigments found in spinach leaves.

(b)

State a suitable solvent for extracting photosynthetic pigments from plant tissue.

[1]

Markscheme

acetone

OR

alcohol

OR

ether

Accept other named organic solvent

If there is more than one answer accept only the first one. (Note: “Water mixed with alcohol” would be correct as would “alcohol, water” but “water, alcohol” would be incorrect)

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