Which of the following polyhalogen compounds is used in the production of the freon refrigerant R-22?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. Chloroform.
Chloroform is used in the production of the freon refrigerant R-22. The compound used in the production of R-22 is carbon tetrachloride. Carbon tetrachloride (CCl₄) reacts with hydrogen fluoride (HF) to produce R-22, also known as dichlorodifluoromethane (CCl₂F₂). Chloroform (CHCl₃) is used in other applications, such as a solvent in laboratories, but not in the synthesis of R-22.