rate of reaction

    Cards (9)

    • calculations to work out the rate of reaction?
      rate=increase in products/time
      rate=decrease in reactants/time
    • how temperature affects the rate of reaction?
      -increase temperature
      -more kinetic energy of particles
      -more frequent,successful collisions
      -rate of reaction increases
    • how concentration/pressure affects the rate of reaction?
      -increase in concentration of temperature
      -more particles in a fixed volume
      -more frequent,successful collisions
      -rate of reaction increases
    • how surface are affect the rate of chemical reaction?

      -increasing surface area
      -increasing surface area:volume ration
      -more surface to react
      -more frequent,successful collisions
      -rate of reaction increases
    • how a catalyst affects the rate of reaction?
      -catalyst lowers the activation energy providing a different reaction pathway
      -more frequent,successful collisions
      -rate of reaction increases
    • what is activation energy?
      the minimum energy needed for a reaction to start
    • method 1 of measuring the rate of reaction?
      -measure starting mass
      -the mass will decrease as the gas produced leaves the flask
      -record the mass every 20 secs
      -calculate the loss of mass per second
    • method 2 of measuring the rate of reaction?
      -mix the reactants and start the stopwatch
      -the reaction produces a white solid,which covers the black cross
      -times how long it takes for the cross to disappear
    • method 3 of measuring the rate of reaction?
      -mix the reactants and start the stopwatch
      -the gas produces will start to fill the gas syringe
      -time how long it takes to collect a specific volume of gas
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