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Transcript
```350
5.
Arrhenius equation indicates that larger the value of Ea, smaller is the rate constant and
slower is the rate of reaction.
E
As T increases a decreases.
RT
This causes an increase in â
Ea
â E /RT
, e a , k and hence, the rate of reaction.
RT
T
â E a /RT â â E a /RT â e âE a /RT â
k
â
rate
increases
decreases
increases
increases
increases
increases
(d) Arrhenius equation and temperature variation :
Relation showing variation in rate constant with temperature.
1. As per Arrhenius equation
k = A Ã e â E a /RT
Where k = rate constant at temp T
A = frequency factor
Ea = Energy of activation
2. Taking log we get
ln k = ln A â
Ea
RT
log10k = log10A â
Ea
2.303 RT
Unique Solutions Â®
S.Y.J.C. Science - Chemistry - Part I
```
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