Multiple Choice
Which element is the most abundant by mass in the human body?
67
views
1. Intro to General Chemistry
Chemical Properties
Multiple Choice
Which of the following compounds is NOT involved in the depletion of stratospheric ozone?
A
CO_2
B
NO_x (nitrogen oxides)
C
Cl_2 (chlorine gas)
D
CCl_2F_2 (dichlorodifluoromethane)
Verified step by step guidance1
Understand the context: The depletion of stratospheric ozone primarily involves compounds that release reactive species capable of breaking down ozone molecules (O_3) in the stratosphere.
Identify the key players in ozone depletion: Nitrogen oxides (NO_x), chlorine gas (Cl_2), and chlorofluorocarbons like CCl_2F_2 are known to participate in catalytic cycles that destroy ozone.
Recall the role of NO_x: Nitrogen oxides catalyze ozone destruction through reactions that convert ozone into oxygen molecules, especially in the stratosphere.
Recall the role of chlorine compounds: Cl_2 and CCl_2F_2 release chlorine radicals upon photodissociation, which then catalytically destroy ozone molecules.
Analyze CO_2: Carbon dioxide (CO_2) is a stable molecule that does not produce radicals or reactive species that break down ozone, so it is not involved in ozone depletion.
Related Videos
Related Practice
