Organic Compounds

Question 1

Empirical formula meaning

Answer 1

Simplest whole number ratio of atoms in a molecule

Question 2

Alicyclic

Answer 2

Hydrocarbon arranged in non aromatic rings

Question 3

Aromatic

Answer 3

Contains benzene rings

Question 4

Structural isomers

Answer 4

Molecules that have the same molecular formula but different structural formula

Question 5

Homolytic fussion

Answer 5

When each bonding atom receives one electron from the bonded pair

Question 6

Heterolytic fission

Answer 6

When one bonding atom receives both electrons from the bonded pair

Question 7

Stereoisomers

Answer 7

Same structural formula and different arrangement of atoms in space

Question 8

Optical isomers

Answer 8

Non-super imposable images

Question 9

D2O does not include

Answer 9

OH or NH2

Question 10

How can chromatography be used to identify amino acids. If there should be 3 spots, why are there only 2?

Answer 10

Measure distance moved by spot/solvent
Compare Rf value with data book values
Two albino acids have the same Rf value

Question 11

Isoelectric point meaning

Answer 11

pH at which amino acid exists as a zwitterion

Question 12

Ester use

Answer 12

Perfume /fragrance/flavouring

Question 13

Suggest two benefits of using single stereoisomers in the synthesis of drugs

Answer 13

Fewer side effects
Increases activity/effectiveness
Reduces cost /difficulty in separating steroisomers

Question 14

How gas chromatography allows products to be identified

Answer 14

Separating compounds
Compare with database

Question 15

Why does it form more than two stereoisomers

Answer 15

Has a chiral centre