chromotogrpah y Flashcards
1
Q
why pencil not pen
A
pen ink will separate into pigments and will interfere with results
2
Q
role of acetone in extracting the pigments from the leaves
A
acetone is an organic solvent
dissolves the lipid membrane of the leaf to release pigments
3
Q
calculating Rf value
A
distance travelled by pigment / distance travelled by solvent front
4
Q
suggest improvement
A
eg repeating with several leaves and calculating mean
eg repeat with other species to see if same trend
