Which of the following reactions is an example of a redox reaction? (2023)

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Question: Which of the following reactions is an example of a redox reaction? (2023)

Options:

Correct Answer: C + O2 → CO2

Exam Year: 2023

Solution:

The reaction C + O2 → CO2 is a redox reaction because carbon is oxidized and oxygen is reduced.

Which of the following reactions is an example of a redox reaction? (2023)

Which of the following reactions is an example of a redox reaction? (2023)

Step 1: Understand what a redox reaction is. A redox reaction involves the transfer of electrons between two substances.
Step 2: Identify the two processes in a redox reaction: oxidation (loss of electrons) and reduction (gain of electrons).
Step 3: Look at the reaction C + O2 → CO2.
Step 4: Determine what happens to carbon (C) in the reaction. Carbon combines with oxygen, indicating it loses electrons, which means it is oxidized.
Step 5: Determine what happens to oxygen (O2) in the reaction. Oxygen combines with carbon, indicating it gains electrons, which means it is reduced.
Step 6: Conclude that since carbon is oxidized and oxygen is reduced, the reaction C + O2 → CO2 is indeed a redox reaction.

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