Criticize the following techniques and give the corrective action(s): (a) Refluxing a mixture that contains diethyl ether using a Bunsen burner.
(b) Refluxing a mixture that contains a large amount of toluene using a hot water bath.
(c) Using a mercury thermometer that is inserted into an aluminum block on a hot plate.
(d) Running a reaction with tert-butyl alcohol (2-methyl-2-propanol) that is cooled to 0°C
in an ice bath.