Flashcards in End Of Unit Questions Deck (8)
How can you find the rate of reaction from a graph of mass of product against time?
From the gradient of the graph
What is meant by the activation energy of a reaction?
The minimum energy that particles must have for collisions to produce a reaction
Name 2 types of reactions that are exothermic
Combustion, oxidisation, neutralisation
Why must calcium carbonate be heated continuously to convert it into calcium oxide and carbon dioxide?
Thermal decomposition is an endothermic reaction
Nitrogen and oxygen react together to produce nitrogen oxide, what changes in conditions would increase the rate of this reaction?
High temp, high pressure, catalyst
Explain in terms of particles why increasing the concentration of a reactant increases the rate of reaction
Particles are closer together (more particles in the same volume) so collisions are more frequent
Explain why increasing the temp increases the rate of a reaction
Particles collide more frequently and with more energy so more collisions have the activation energy