Реферат: Rates Of Reaction Essay Research Paper Rates

react and the activation energy they have a greater effect on the rate of

reaction than other changes.

A change in concentration is a change in the number of particles in a given

volume.

If we increase the volume:-a) The particles are more crowded so they collide

more often.

b) Although the average amount of energy possessed by a particle does not

change, there are more particles with each amount of energy;- more particles

with the activation energy.

a) is a major effect which effects the rate, but b) is a minor effect which

effects the rate very slightly.

In this experiment we are not concerned with whether the reaction is

exothermic or endothermic because we are concerned with the activation energy

needed to start and continue the reaction.

PREDICTIONS

I predict that as we increase the temperature the rate of reaction will

increase.

If we increase the temperature by 100C the rate of reaction will double.

I predict that if we increase the concentration of the acid the reaction rate

will increase.

If the concentration of the acid doubles, the rate of the reaction will also

double.

LINKING PREDICTION TO THEORY

Reaction Rate and Temperature.

The collision theory describes how the rate of reaction increases as the

temperature increases. This theory states that as the temperature rises, more

energy is given to the particles so their speed increases, this increases the

number of collisions per unit of time. This increase in collisions increases

the rate of reaction.