Clorofluorocarbonos

The video discusses halogenated compounds like ethane, methane, and propane, where hydrogen atoms are replaced by chlorine and fluorine. These compounds have historically been used in refrigerators, fire extinguishers, and aerosols. However, their use has significantly harmed the ozone layer, leading to an international agreement in 1989 to phase them out gradually.

Which elements replace hydrogen in ethane, methane, and propane to form chlorofluorocarbons?

• Sulfur and phosphorus

• Carbon and hydrogen

• Chlorine and fluorine

• Oxygen and nitrogen

What were chlorofluorocarbons historically used for?

• In refrigerators and aerosols

• As a building material

• In textile manufacturing

• As a food preservative

Which of the following was NOT a use of chlorofluorocarbons?

• Fire extinguishers

• Refrigerators

• Aerosols

• Fertilizers

What environmental issue is associated with the use of chlorofluorocarbons?

• Water pollution

• Ozone layer depletion

• Global warming

• Deforestation

In what year did the international community commit to phasing out chlorofluorocarbons?

• 1989

• 2000

• 1975

• 2015