The best method of converting ethanol, C2
H5
OH, into iodoethane, C2
H5I, is to
A heat iodine and ethanol under reflux.
B react ethanol and potassium iodide in the presence of dilute acid.
C heat potassium iodide and ethanol with concentrated sulfuric acid.
D heat red phosphorus, ethanol and iodine under reflux.
The answer is D, but can anyone please explain to me why it is this and not the others.
Thank You.