Bonding And Physical Properties

Question 1

C=O bonding description
Polarity and location of greatest electron density

Answer 1

Made of a sigma and pi bond
Polar due to oxygen and oxygen has greatest electron density

Question 2

Physical properties of aldehydes

Answer 2

Distinctive smell
Small chains have unpleasant smells
Long chains have pleasant smells

Question 3

Physical properties of ketones

Answer 3

Lower ketones smell of solvents

Question 4

Boiling temperatures of aldehydes and ketones and why / bonding that can be formed

Answer 4

Have LDF and permanent dipole-dipole attractions but no hydrogen bonding
Boiling temp increases with molar mass as LDF increase
Most liquid at room temp

Question 5

Solubility of aldehydes and ketones

Answer 5

Smaller are soluble in water as they can form hydrogen bonds
Solubility decreases as hydrocarbon part of the molecule interrupts hydrogen bonds