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ScotlandChemistryQuick questions

Area 1: Chemical Changes and Structure

Quick questions on Controlling the rate: collision theory and activation energy - SQA Higher Chemistry

3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What is q1?
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Explain, using collision theory, why increasing the concentration of a reactant increases the rate. [2 marks]
What is q2?
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A reaction produces 60 cm360 \text{ cm}^3 of gas in 24 s24 \text{ s}. Calculate the average rate. [1 mark]
What is q3?
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State the effect of a catalyst on the activation energy and on the enthalpy change. [2 marks]

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