factors that affect rate of reaction Flashcards
what are the 4 factors that affect rate of reaction?
presence of catalyst, surface area, temperature and concentration/pressure
why does surface area affect rate of reaction?
if one of the reactants is a solid, breaking it up with increase its surface area, so the particles have more area to work on, and more frequent collisions
why does concentration affect rate of reaction?
when a solution is more concentrated, this means there are more particles in same volume of water, this makes successful collisions more frequent
why does pressure affect rate of reaction?
when pressure of gas is increased, same number of particles occupy a smaller space, this makes successful collisions more frequent
why does a catalyst affect rate of reaction?
provides an alternative reaction pathway with a lower activation energy
is a catalyst used up in a reaction?
no
