Factors that effect the rate of the reaction

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Factors that effect the rate of the reaction
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Factors that effect rate

• We will discuss four factors that effect the rate
  of reaction
• Concentration
• Temperature
• Surface area
• Catalysts

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Concentration

• High concentration of the reactants leads to more
  effective collisions per unit time
• This leads to an increasing reaction rate
• High concentration of products tends to have
  lower rate

4
Temperature

• Higher temperature implies higher average kinetic
  energy of molecules
• When the temperature is increased the molecules
  start to move faster
• General rule(most) reaction will approximately
  double for every 10C increase
• Note once reaction reaches a certain temperature
  some species may be altered and rate will slow or
  stop.

5
Surface area

• Increasing surface area of reactants results in a
  higher number of reaction sites which increases
  the number of collisions
• Increases the rate of reaction
• Example crushing up a solid into powder before
  reaction

6
Catalyst

• Catalyst is something that speeds up the rate but
  is not consumed in the reaction
• Adding a catalyst produces an alternative pathway
  or mechanism for the reaction to occur

The alternate route has a lower activation energy
for reaction, so when collisions happen they are
more successful