C8:Rates and Equilibrium Flashcards
How to work out the rate of reaction
how fast the reactants are used up or how quickly the products are made divided by the time
the steeper the gradient means…
the faster the reaction
to calculate the ROR at a specific point what do you do?
draw a tangent to the curve and find the gradient of the line
the minimum amount of energy is called what?
activation energy
if the surface area to volume ratio increases what happens to the ROR?
it increases
what happens to the ROR when the temperature is increased?
the ROR increases
why does the ROR increase when the temperature is increased?
particles move faster with more energy meaning there are more frequent successful collisions
what happens to the ROR when the concentration is increased?
increases the frequency of collisions so the ROR increases
what happens to the ROR when the pressure is increased?
increases the frequency of collisions so ROR increases
what is a catalyst?
a substance that speeds up the ROR without getting used up in the process
why are catalysts used in industry?
to speed up rates and reduce the cost of energy
what does exothermic mean?
gives out energy
what does endothermic mean?
requires energy
what happens in a reversible reaction?
the reactants can form the products and the other way around
what happens in a closed system for a reversible reaction?
the rate of the forward and reverse reactions is equal
