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Why are nanoparticles useful as catalysts in chemical reactions? A - OCR Gateway - GCSE Chemistry - Question 11 - 2023 - Paper 1

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Why are nanoparticles useful as catalysts in chemical reactions? A. Nanoparticles are a new technology. B. Nanoparticles have a high surface area to volume ratio. ... show full transcript

Worked Solution & Example Answer:Why are nanoparticles useful as catalysts in chemical reactions? A - OCR Gateway - GCSE Chemistry - Question 11 - 2023 - Paper 1

Step 1

A. Nanoparticles are a new technology.

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Answer

This statement does not directly relate to the usefulness of nanoparticles as catalysts; the novelty of the technology does not determine catalytic efficiency.

Step 2

B. Nanoparticles have a high surface area to volume ratio.

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Answer

This is the correct option. Nanoparticles possess a high surface area to volume ratio, which enhances their reactivity and ability to accelerate chemical reactions.

Step 3

C. Nanoparticles have a large particle size.

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Answer

This statement is incorrect. Larger particle sizes reduce the surface area available for reactions, which is not beneficial for catalytic activity.

Step 4

D. Nanoparticles have a low surface area to volume ratio.

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Answer

This is also incorrect. A low surface area to volume ratio would lead to decreased reactivity and is not a characteristic of effective catalysts.

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