Course review

2.2 Rate of chemical change

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Learning objective

2.2.1—Rate of reaction

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• Change in concentration per unit time • Determine rates from tangents of concentration, volume, or mass graphs

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Learning objective

2.2.2—Collision theory

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• Sufficient energy + proper orientation required • Kinetic energy and temperature (Kelvin) • Explain successful collisions using activation energy and orientation

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Learning objective

2.2.3—Factors affecting rate

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• Pressure, concentration, surface area, temperature, catalyst • Predict and explain rate changes when conditions change

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Learning objective

2.2.4—Activation energy (Ea)

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• Minimum energy for successful collision • Maxwell-Boltzmann distribution curves • Use Maxwell-Boltzmann curves to show temperature effects on successful collisions

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Learning objective

2.2.5—Catalysts

New

• Provide alternative pathway with lower Ea • Energy profiles with/without catalysts • Explain catalyst effects on energy profiles and Maxwell-Boltzmann distributions

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