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Explain how the rate of a reaction is influenced by factors such as the concentration of solutions, the surface area of solids, the temperature, and the presence of a catalyst.

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Cambridge IGCSE Combined ScienceChemical reactionsCore content

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Explain how the rate of a reaction is influenced by factors such as the concentration of solutions, the surface area of solids, the temperature, and the presence of a catalyst

This point belongs to Rate of reaction, especially Rate of reaction outcomes.
You need to be able to explain how the rate of a reaction is influenced by factors such as the concentration of solutions, the surface area of solids, the temperature, and the presence of a catalyst.
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DescribeExplainIdentify

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Paper 3 structured question: Rate of reaction

Paper 3Theory (Core)2 marks

Description

Reaction of Hydrochloric Acid and Calcium Carbonate

When hydrochloric acid reacts with calcium carbonate, carbon dioxide gas is produced along with calcium chloride and water. The reaction can be affected by various factors such as concentration, temperature, and surface area of calcium carbonate.

a
Explain how increasing the concentration of hydrochloric acid affects the rate of reaction with calcium carbonate.
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[2]

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Related learning objectives

Recognize that a catalyst speeds up a reaction and remains unchanged after the reaction is complete.
Rate of reaction outcomes
Outline methods for conducting experiments to measure the rate of a reaction, including observing changes in mass or gas production.
Rate of reaction outcomes
Analyze data from experiments on the rate of reaction, including interpreting graphs.
Rate of reaction outcomes
Discuss how factors such as concentration, surface area, temperature, and catalysts affect the rate of reaction through the principles of collision theory.
Rate of reaction outcomes
Describe the key concepts of collision theory, including particle density, collision frequency, kinetic energy, and activation energy.
Rate of reaction outcomes

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