Question detail
What role do transition metals play in catalytic converters?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Transition metals (A-level only)
Question
- A. They absorb pollutants.
- B. They change the color of exhaust gases.
- C. They facilitate the conversion of harmful gases into less harmful products.
- D. They increase the temperature of the exhaust.
Answer
They facilitate the conversion of harmful gases into less harmful products.
Explanation
Transition metals in catalytic converters act as catalysts that help convert harmful gases like carbon monoxide and nitrogen oxides into less harmful substances, improving air quality.
Common mistake
Misunderstanding Catalytic Activity
Students often confuse the role of transition metals as catalysts with their ability to change oxidation states, thinking that all transition metals can catalyze reactions equally.
To clarify, remember that transition metals act as catalysts due to their ability to provide a surface for reactions and their variable oxidation states. For example, iron (Fe) can catalyze the Haber process by forming different oxidation states that facilitate the reaction between nitrogen and hydrogen. This means that while many transition metals can act as catalysts, their effectiveness can vary based on the specific reaction conditions and the metal's properties.
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