Does increased temperature generally decrease or increase the rate of a reaction?
increase the rate of reaction
for a chemical reaction to occur, particles must collide. At a higher temperature particles move faster hence there are likely to be more collisions and therefore reaction rate should increase.
Reactants must also collide with enough energy to overcome the energy of activation required for a reaction to occur. An increase in temperature increases the energy of the particles, and therefore when they collide they are more likely to have the energy required for a reaction to occur.