Factors affecting rates of reaction


The rate of reaction depends on 4 things:

  • Tempreture.
  • The concentration of a solution or the pressure of gas.
  • Surface Area-this changes depending on the size of the lumps of a solid.
  • The presense of a catalyst

Increasing the tempreture increases the rate:

  • When the tempreture is increased, the particles move faster.
  • If they are moving faster, they are going to collide more frequently
  • The faster they move the more energy they have, therfore the the collisions will ahve enough energy to make the reaction happen

Increasing the concentration or pressure increases the rate:

  • If a soloution is made more concentrated, it means there are more particles knocking about in the…


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