Question

Which of the following is the common chemical name for Propellant 11?

• A. Dichlorodifluoromethane
• B. Dichlorotetrafluorethane
• C. Trichloromonofluoromethane
• D. Chloropentafluoroethene

Answer 1

The Correct Option is C

To solve this question, we need to identify the chemical name that corresponds to "Propellant 11." The chemical names provided as options are:

• Dichlorodifluoromethane
• Dichlorotetrafluorethane
• Trichloromonofluoromethane
• Chloropentafluoroethene

Step 1: Understand the naming of chlorofluorocarbons (CFCs).

Chlorofluorocarbons are compounds that contain chlorine, fluorine, and carbon. They are commonly used as refrigerants, cleaning solvents, and propellants in aerosols. Each CFC is given a numerical designation that generally corresponds to its chemical structure, where the numbers represent the number of carbon, hydrogen, chlorine, and fluorine atoms.

Step 2: Decode the names based on structure.

• Dichlorodifluoromethane: This compound has the empirical formula \text{CCl}_2\text{F}_2
• Dichlorotetrafluorethane: This compound can be represented as \text{C}_2\text{Cl}_2\text{F}_4
• Trichloromonofluoromethane: This is \text{CCl}_3\text{F}
• Chloropentafluoroethene: The empirical formula is \text{C}_2\text{Cl}\text{F}_5

Step 3: Identify "Propellant 11."

"Propellant 11" is a well-known name for Trichloromonofluoromethane, which is also referred to by its trade name, Freon-11.

Conclusion: The correct chemical name for Propellant 11 is Trichloromonofluoromethane. All other options can be ruled out because their compositions do not match that of Propellant 11.