Measuring the rate of reaction The rate of a reaction can be measured by measuring; the rate at which the products are produced (e.g. using a syringe if a gas is produced) the rate at which the reactants are used up (e.g. by monitoring colour changes) Measuring the rate of reaction

Measuring the rate of reaction

Low Concentration Low concentration

High Concentration High concentration

Low Temperature Low temperature

High Temperature High temperature

The speed of a reaction can be increased by; Increasing temperature Rate of reaction The speed of a reaction can be increased by; Increasing temperature Increasing concentration/pressure Increasing the surface area Using a catalyst A catalyst increases the rate of a chemical reaction but it is not used up during the reaction Rate of reaction

Collision Theory Collision theory

Changing concentration

Changing concentration

Changing Temperature Changing temperature

Changing Temperature Changing temperature

Changing Surface Area Changing surface area

Changing Surface Area Changing surface area

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