Rates Of Reaction

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have to have the activation energy are those particles which are moving,
in the case of magnesium and hydrochloric acid, it is the hydrochloric acid
particles which have to have the activation energy because they are the ones
that are moving and bombarding the magnesium particles to produce magnesium
chloride.

The rate at which all reactions happen are different. An example of a fast
reaction is an explosion, and an example of a slow reaction is rusting. In any
reaction, reactants chemical reactions� products.

We can measure reactions in two ways:

1) Continuous:- Start the experiment and watch it happen; you can use a
computer �logging� system to monitor it. I.e. Watching a colour fade or
increase.

2) Discontinuous:- Do the experiments and take readings/ samples from the
experiment at different times, then analyse the readings/samples to see how many
reactants and products are used up/ produced.

Reaction rate = amount of reactant used up
time taken

If ...

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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 ...

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