IB Chemistry R2.2 How fast? The rate of chemical change
Автор: Heather Lentz
Загружено: 2026-01-30
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Guiding Question
How can the rate of a reaction be controlled?
Understandings
R2.2.1 The rate of reaction is expressed as the change in concentration of a particular reactant/product per unit time.
R2.2.2 Species react as a result of collisions of sufficient energy and proper orientation.
R2.2.3 Factors that influence the rate of a reaction include pressure, concentration, surface area, temperature, and the presence of a catalyst.
R2.2.4 Activation energy, Ea , is the minimum energy that colliding particles need for a successful collision leading to a reaction.
R2.2.5 Catalysts increase the rate of reaction by providing an alternative reaction pathway with lower Ea.
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