Answers 26-27 - C - RUSD Chemistry in the Earth System Catalysts — QuizQuestion 3

3

QuizMultiple Choice

Catalysts — Quiz

Question 3 • 26-27 - C - RUSD Chemistry in the Earth System

Which catalyzed reaction breaks up ozone?

Answer

A

2 cap h sub 2 cap o sub 2 l MnO sub 2 set over right arrow 2 cap h sub 2 cap o l plus cap o sub 2

B

2 cap h sub 2 cap o sub 2 aq Pt sub 3 set over right arrow 2 cap h sub 2 cap o l plus cap o sub 2

C

cap o sub 3 plus cap o cs set over right arrow 2 cap o sub 2

D

cap o sub 2 plus 2 SO sub 2 NO set over right arrow 2 cap s sub 3

Explanation

Ozone is O₃, and choice C shows it reacting with an oxygen atom to form two molecules of ordinary oxygen: O₃ + O → 2O₂. This removes ozone from the atmosphere. Choices A and B instead show hydrogen peroxide breaking down, while D shows sulfur dioxide being converted to sulfur trioxide.

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