3.11: Explain the Effects of Changes in Surface Area of a Solid, Concentration of a Solution, Pressure of a Gas and Temperature on the Rate of a Reaction in Terms of Particle Collision Theory

PARTICLE COLLISION THEORY: For reaction to occur, reactant particles need to collide with one another

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EFFECT OF FACTORS ON THE RATE OF REACTION:

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*SURFACE AREA OF SOLID:

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SURFACE AREA OF SOLID

Diagram showing the Effect of Surface Area on Rate of Reaction

EXPLANATION: As the surface area of solid Increases, the rate of reaction increases This is because as the surface area of solid increases, more surface area particles will be exposed to the other reactant This causes more frequent successful collisions to occur, increasing the rate of reaction

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s*CONCENTRATION OF A SOLUTION:
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CONCENTRATION OF A SOLUTION

Diagram showing Effect of Concentration on Rate of Reaction

EXPLANATION: As the concentration of solution increases, the rate of reaction increases This is because as the concentration of solution increases, there will be more Reactant Particles in a given volume This allows more frequent successful collisions to occur, increasing the rate of reaction

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s*PRESSURE OF A GAS:
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PRESSURE OF A GAS

Diagram Showing Effect of Pressure on Rate of Reaction

EXPLANATION: As the pressure of gas increases, the rate of reaction increases This is because as the pressure of gas increases, there will be more reactant gas particles in a given volume This allows more frequent successful collisions to occur, increasing the rate of reaction

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*TEMPERATURE:

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TEMPERATURE

Diagram Showing Effect of Temperature on Rate of Reaction

EXPLANATION: As the temperature increases, the react of reaction increases This is because as temperature increases, particles will gain kinetic energy, vibrating and moving faster This allows more frequent successful collisions to occur, increasing the rate of reaction