.4 catalysts

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Catalysts change the rate of chemical reactions but are not used up during the reaction. Different reactions need different catalysts. Enzymes act as catalysts in biological systems.
Catalysts increase the rate of reaction by providing a different pathway for the reaction that has a lower activation energy
reaction profile for a catalysed reaction:
A catalyst lowers the activation energy so more particles have sufficient energy to reach the top of the hill and start the reaction. Therefore, there is a higher frequency of successful collisions between reactant particles and hence a greater number of products formed per unit time.

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.4 catalysts

Cards (4)

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6.2 Reversible reactions and dynamic equilibrium

5.1 Reaction Rate

1.5.3 Measuring Reaction Rates

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2.2.1 Factors Affecting Rate

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6.2 Reversible reactions and dynamic equilibrium

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