core practtical 6: chlorination of a tertiary alcohol

Question 1

method

Answer 1

• add tertiary alcohol to measuring cylinder, measure mass
• put into separating funnel, weigh by difference
• add concentrated HCl to separating funnel in small portions. after each portion, stopper flask and invert, open tap to release pressure
• let separating funnel stand in fume cupboard, and wait for layers to separate
• run tap to get rid of aqueous bottom layer
• add sodium hudrogen carbonate to neutralise acid, release tap to relieve co2 pressure, continue until no more effervscene
• repeat
• add anhydrous sodium sulfate drying agent, keep adding until moves freely
• ddecant into distillatino flask
• distil

Question 2

what is made

Answer 2

2 chloro 2 methyl propane

Question 3

boiling point 2-chloro-2methylpropane

Answer 3

48-52

Question 4

method for getting cyclohezene from cyclohexanol

Answer 4

• weigh by difference the cyclohexanol into distillation apparatus
• add concentrated phosphoric acid
• add anti bumping granules and distill anything below 100
• pour distillate into separating funeel and add sodium chloride (separates organic from aqueous)
• shake and leave to separate
• run off into a beaker and transfer upper layer into conical flask
• add anhydrous sodium sulfate to dry until liwuid clear/ stops clumping
• decant and reqeigh

Question 5

USUAL ORDER IS TO

Answer 5

• separating funnel
• then distil