c14-Org

Question 1

functional group of alcohols?

Answer 1

-OH, hydroxyl

Question 1

are alcohols more or less volatile than alkanes?

Answer 1

less volatile

Question 2

what are two physical differences between alcohols and alkanes

Answer 2

alcohols have a higher melting points
alcohols have greater water solubility

however these differences become much smaller as the length increases

Question 3

why are alcohols liquid at room temp

Answer 3

they have hydrogen bonds between each of the molecules that hold the molecules together in the liquid state

Question 4

why are alcohols soluble in water

Answer 4

they are completely soluble in wtaer as hydrogen bonds form between the polar -OH group of the alcohol and the water molecules
-as the chain increases, the influence of the OH group becomes relatively smaller and solubility decreases

Question 5

can alcohols undergo combustion

Answer 5

yes they can undergo complete combustion in a plentiful supply of oxygen

Question 6

what can primary alcohols be oxidised to make

Answer 6

-aldehydes
-carboxylic acids

Question 7

what are secondary alcohols oxidised too

Answer 7

ketones

Question 8

what is dehydration

Answer 8

any reaction in which a water molecule is removed from the starting material

Question 9

what is the short process od dehydration and what is the product

Answer 9

and alcohol is heated under reflux in the prescence of an acid catalyst

prduct is an alkene