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The activation energy of the exothermic ...

The activation energy of the exothermic reaction `ArarrB " is "40"kJ."mol"^(-1)` . The heat of reaction is `15"kj.mol"^(-1)` . What is the activation energy for the backward reaction ?

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The reaction is exothermic, `DeltaH=-15"kJ.mol"^(-1)`
Enthalpy of the reaction `(DeltaH)` = activation energy of the forward reaction- the activation energy of the backward reaction.
or, `-15"kJ.mol"^(-1)=40"kJ.mol"^(-1)` - the activation energy of the backward reaction. Thus, the activation energy of the backward reaction = (40+15) = `55kJ."mol"^(-1)`
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CHHAYA PUBLICATION-CHEMICAL KINETICS-EXERCISE (NUMERICAL PROBLEMS)
  1. The activation energy of the exothermic reaction ArarrB " is "40"kJ."m...

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  2. 2Ararr4B+D , in this reaction, concentration of B increases to 2xx10^...

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  3. 2Ararr4B+D , in this reaction, concentration of B increases to 2xx10^...

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  4. 2N(2)O(5)rarr4NO(2)(g)+O(2)(g) , The above reaction is completed in a ...

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  5. 2N(2)O(5)rarr4NO(2)(g)+O(2)(g) , The above reaction is completed in a ...

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  6. 2N(2)O(5)rarr4NO(2)(g)+O(2)(g) , The above reaction is completed in a ...

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  7. Cl(2)+2I^(-)rarr2Cl^(-)+I(2) , the concentration of I^(-) falls from...

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  8. A+BrarrC+D , Calculate the rate law and rate constant of the reactio...

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  9. For the reaction , N(2)(g)+3H(2)(g)rarr2NH(3)(g),(1)/(2)(d[NH(3)])/(d...

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  10. For the reaction , 4NH(3)(g)+5O(2)(g)rarr4NO(g)+6H(2)O(g) the concentr...

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  11. For the reaction , 4NH(3)(g)+5O(2)(g)rarr4NO(g)+6H(2)O(g) the concentr...

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  12. For the reaction , 4NH(3)(g)+5O(2)(g)rarr4NO(g)+6H(2)O(g) the concentr...

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  13. A(2)+B(2)rarr2AB , Fill up the blanks writing the order of reaction wi...

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  14. For the reaction A+Brarr product , (a) the rate of reaction doubles on...

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  15. For the reaction A+BrarrC+D , it is found that rate of reaction doubl...

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  16. Half - life of a first order reaction is 15 min . Calculate rate const...

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  17. 25% of a first order reaction is completed in 30 min . Find the time r...

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  18. A first order reaction takes one hour for 50% completion How long will...

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  19. The half -life of a first order reaction ArarrB is 10 min . What frac...

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  20. In a first order reaction , the amount of reactant decomposed in the f...

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  21. The half -life of a first order reaction is 40min . Calculate the time...

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