Question
Sun July 24, 2011 By:

the activation energy of a reaction is 75.2kj/mol in the absence of a catalyst and 50.14kj/mol with a catalyst.how many times will the rate of reaction grow in the presence of the catalyst if the reaction preceeds at 25degree celcius?

Expert Reply
Mon July 25, 2011
According to A rrhenius equation,
      
Let for uncatalysed reaction ,   --------(i)
And , for catalysed reaction ,   ---------(ii)
Subtracting equation (i) from equation (ii)
 
 
   =
   = 4.39
Taking antilog on both sides,we have
 
Therefore rate of reaction increased by 2.45 x 104 times
 
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