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I can explain why increasing pressure, surface area or concentration increases the frequency of collisions between particles and therefore the rate of reaction.
Muuji qoraalka
Particles of reactants in a chemical reaction can react together if they collide with sufficient energy.
Increasing surface area of a solid lets more reacting particles in a solution collide with its particles each second.
Increasing concentration of a reacting solution introduces more reactant particles, so they collide more frequently.
Increasing temperature of reactants increases the speed of particles, so they collide more frequently.
Increasing pressure of reacting gases pushes reactant particles closer together, so they collide more frequently.
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