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NEET Class neet Answered

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Asked by Prashant DIGHE | 28 Feb, 2020, 10:02: PM
answered-by-expert Expert Answer
Given:
 
T=  300 K 
 
T= 400 K
 
K = 60 min
 
K= 40 min
 
We know, activation energy is calculated by using,
 
ln open parentheses straight K subscript 2 over straight K subscript 1 close parentheses space equals space straight E subscript straight a over straight R open parentheses 1 over straight T subscript 2 minus 1 over straight T subscript 1 close parentheses

ln open parentheses 40 over 60 close parentheses space equals fraction numerator straight E subscript straight a over denominator 8.3 end fraction open parentheses fraction numerator 400 minus 300 over denominator 400 cross times 300 end fraction close parentheses

ln open parentheses 2 over 3 close parentheses equals space fraction numerator straight E subscript straight a over denominator 8.3 end fraction open parentheses 100 over 120000 close parentheses

straight E subscript straight a space equals space 3984 space straight J divided by mol

straight E subscript straight a space equals space 3.98 space straight J divided by mol
 
Activation energy is 3.98 J/mol
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