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KCET 2017 Chemistry Solved Paper
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Question : 27
Total: 60
Which of the following statement is in accordance with the Arrhenius equation ?
Rate of a reaction increases with increase in temperature
Rate of a reaction increases with decrease in activation energy
Rate constant decreases exponentially with increase in temperature
Rate of reaction does not change with increase in activation energy
A and B both are correct
Validate
Solution:
According to Arrhenius equation
k
=
A
e
−
E
s
R
T
→ (1)
Taking log of Eq. (1), we get
ln
k
=
ln
A
−
E
a
R
×
1
T
It is clear from the above equation that by increasing the temperature and by decreasing activation energy, the rate of reaction will increase.
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