Rate of Reaction (C9)

Cards (3)

factors that affect rate of reaction  
temperature
concentration of reactant
particle size / surface area
catalyst
how does particle size / surface area affect rate of reaction? 
the smaller particle size, the larger total surface area.
more reactant is exposed to react and number of collisions between reactants increase
how does catalyst affect rate of reaction? 
it increases rate of reaction w/o getting used up -
a catalyst lowers the activation energy
hence, more reactants are able to meet this lower activation energy resulting in increasing rate of reaction