C3.1 Flashcards
What does the rate of reaction measure?
The amount of product formed in a fixed time
When are reactions usually faster?
At the start but they slow down as the reactants are used up
What units are commonly used when measuring the rate of reaction?
g/s and cm^3/s
How can the rate of reaction be worked out on a graph?
The gradient. This can be calculated by construction lines
What is the gradient of a graph
x
What is the limiting reactant?
The reactant not in excess that gets used up by the end of the reactant
What is the amount of product formed in a reaction directly proportional to?
The amount of limiting reactant used
Give an example on how the amount of product formed and the amount of limiting reactant used are directly proportional to eachother
If the amount of limiting reactant used doubles, the amount of product formed doubles too
When do reactions occur?
When particles collide together
What is interpolation?
Making an estimate within a range of results
How does concentration affect the rate of reaction?
As concentration increases the particles become more crowded . This increases the number of collisions between reacting particles
How does temperature affect the rate of reaction?
The particles gain kinetic energy and move around more quickly so collisions are more successful
What does the rate of reaction depend on?
Collision frequency
What is needed for a successful collision?
Each particle must have enough energy to react
How does pressure affect rate of reaction?
It forces particles together, increasing collision frequency
