Question

how does size of particles and catalyst affect the rate of chemical reaction

Answer 1

Answer:

A catalyst speeds up a chemical reaction, without being consumed by the reaction. It increases the reaction rate by lowering the activation energy for a reaction. Remember that with a catalyst, the average kinetic energy of the molecules remains the same but the required energy decreases.

As particle size decreases, the rate of reaction increases. so reaction rate is linearly dependent on particle size. Smaller reactant particles provide a greater surface area which increases the chances for particle collisions so the reaction rate increases.

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