c6

• what factors affect rate of reaction

  temperature

  surface area

  catalyst

  pressure

  concentration
• how does increasing temp affect rate of reaction

  more kinetic energy

  particles move faster

  higher frequency of successful collision so increased rate
• how does increasing surface area affect rate

  increases number of exposed particles able to react

  increased frequency of successful collisions so increased rate
• how does the presence of a catalyst affect rate

  provides an alternative pathway with lower activation energy

  higher proportion of particles with energy greater than activation energy

  catalyst = increased rate
• how does increasing pressure / concentration affect rate

  more particles in the same unit volume so have less space

  higher frequency of successful collisions

  increased pressure / conc = increased rate
• what does decreasing temp do to position of equilibrium 


  moves in exothermic direction
• what does increasing temp do to the position of equilibrium

  moves in endothermic direction
• what does increasing pressure do to the position of equilibrium

  moves in direction with fewer moles of gas
• what does decreasing pressure do to the position of equilibrium

  moves in direction with more moles of gas
• what does increasing conc of reactants do to the position of equilibrium

  moves to right
• what does decreasing conc do to the position of equilibrium

  moves to left
• whats le chatelier’s principle

  if you change the conditions of a reversible reaction at equilibrium the system will try and counteract that change