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How Catalysts Work
In a chemical reaction, existing bonds in the reactants must first stretch and break.

Then new bonds can form as the reactants are converted to products.

Bond breaking is an endothermic process.

A pair of reacting molecules must have enough energy between them to collide with

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Catalysts and Equilibrium
Catalysts do not affect the position of equilibrium in a reversible reaction.

They alter the rate at which the equilibrium is attained, but not the composition of
the equilibrium mixture.

Homogeneous Catalysts
Homogeneous catalysts normally work by forming an intermediate compound with
the reactants. That is why…


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