Flashcards
Controlling the rate
Flashcards do conjunto (12)
- 1How do you calculate the relative rate of reaction?relative rate = 1/time
- 2How do you calculate the rate of reaction?Change in concentration or volume or mass
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time - 3What is required for a successful collision to occur?Particles have sufficient energy(met the activation energy) and have the correct collision geometry
- 4How does increasing the pressure or concentration affect the rate of reaction?It increases the rate of reaction as there are more particles in the same space, so there is more chance of a collision occurring
- 5How does increasing particle size affect the rate of reaction?The rate of reaction decreases as there is less surface area for particles to react.
- 6How does increasing temperature affect the rate of reaction?It increases the rate of reaction as particles will have more kinetic energy and there is a higher chance that they meet the activation energy.
- 7Why is important to control the rate of reaction?To ensure the reaction is safe and is economically worthwhile
- 8What is activation energy?The minimum amount of energy required by particles to have a successful collision
- 9What is enthalpy change?The energy change that occurs when reactants are converted to products.
- 10How do you calculate enthalpy change?H = E products - E reactants
- 11What is the sign for the enthalpy change of an endothermic reaction?+
- 12What effect do catalysts have on the activation energy?They lower the activation energy.
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- Descrição
- Higher Chemistry (Unit 1: Chemical Changes and Structure) FlashCards sobre Controlling the rate , criado por Lana Duncan em 04-04-2016.
- Criado por
- Lana Duncan
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