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Multiple Choice
Which of the following components can be present in a reducing atmosphere?
A
Carbon dioxide (CO2)
B
Oxygen gas (O2)
C
Hydrogen gas (H2)
D
Sulfur dioxide (SO2)
Verified step by step guidance
1
Understand the concept of a reducing atmosphere: A reducing atmosphere is one that has a low oxidation potential and is rich in reducing agents, which are substances that can donate electrons to other substances.
Identify the characteristics of reducing agents: Reducing agents are typically rich in hydrogen or other elements that can easily donate electrons. They are often found in environments with little to no oxygen.
Analyze each component: Carbon dioxide (CO2) and sulfur dioxide (SO2) are oxidizing agents because they contain oxygen, which tends to accept electrons rather than donate them.
Consider the role of oxygen gas (O2): Oxygen is a strong oxidizing agent and its presence would not support a reducing atmosphere as it tends to accept electrons.
Evaluate hydrogen gas (H2): Hydrogen gas is a classic reducing agent because it can donate electrons, making it compatible with a reducing atmosphere.