rate of reaction

• 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