Butanenitrile may be Prepared by Heating

Answer: propyl chloride with KCN

Explanation: 

C4H7N is the formula for butanenitrile. Butyronitrile is another name for it. Most polar solvents are miscible with it. By heating specific chemical compounds with KCN, butanenitrile can be made.

Chemical reactions are as follows:

• React butyl alcohol with KCN; the reaction will not take place because KCN cannot react with butyl alcohol’s hydroxyl group. As a result, there will be no reaction.
• In the same way that hydroxyl groups cannot react with cyanide ions, propyl alcohol cannot react with KCN.
• When propyl chloride is combined with KCN, the reaction is 

CH3–CH2–CH2–Cl  KCN  CH3–CH2–CH2–CNButyronitrile + KCl, 

yielding butanenitrile.