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Exothermic reaction = Transfer energy to the
surroundings.
Endothermic = Take in energy from the
surroundings.
If a reaction is reversible it will be exothermic
one way, and endothermic the other.…read more

Slide 3

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If a reaction is reversible, the products can react
again to reproduce the original reactants.…read more

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Chemical Equilibrium
If a reversible reaction takes place in a closed
system, a chemical equilibrium will eventually
be reached.
This means that the forward and backward
reactions are taking place at the same rate.
This means that the concentration of products
and reactants does not change over time.…read more

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Effect of Heat on Equilibrium
If the forward reaction is exothermic (releases energy) and
the temperature is increased the yield of products
decreases. If the temperature lowers the yield increases.
If the forward reaction is endothermic (takes in energy) and
the temperature is increased the yield of products will
increase. If the temperature increases the yield
decreases.
N.B : Yield = Product produced…read more

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Ammonia
Ammonia is a compound of nitrogen and
hydrogen. It is a colourless gas.
Ammonia is used to make fertilisers, explosives
and dyes.
It is produced through the Haber process.…read more

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