C2 Calculations and analysis Flashcards
1
Q
What is the formula for percentage yield?
A
(Actual Yield ÷ Theoretical yield) x 100
2
Q
Give 3 reasons why the yield is not 100%.
A
Reversible reaction
Product can be lost when separated
Other reactions occur
3
Q
What is the percentage yield if a reaction only produces 20g when in theory it produces 40g.
A
% yield = (20 ÷ 40) x 100 = 50%
4
Q
What method can be used to analysis food additives?
A
Paper Chromatography
