Hex-1-ene is a liquid with a boiling point of 63°C and a density of 0.67 g cm-?. Hex-1-ene can be prepared by refluxing hexan-1-ol (boiling point 157°C) with an
acid catalyst.
Hexan-1-ol is a liquid with a boiling point of 157°C and a density of 0.82gcm-3.
The equation is shown below.
OH
H2O
After reflux, the resulting mixture contains unreacted hexan-1-ol, hex-1-ene and
water.
The mixture is then purified.
The expected percentage yield of hex-1-ene from hexan-1-ol is 62.5%.
A student plans to prepare 4.20g of hex-1-ene by this method.
Calculate the mass of hexan-1-ol that the student should use and explain how you
could obtain pure hex-1-ene from the mixture obtained after reflux.