Chemical Kinetics and Nuclear ChemistryHard
Question
In gaseous reactions important for the understanding of the upper atmosphere, H2O and O react bimolecularly to form two OH radicals. ΔH for this reaction is 72 kJ at 500 K and Ea is 77 kJ/mol, then Ea for the bimolecular recombination of two OH radicals to form H2O and O is
Options
A.149 kJ/mol
B.72 kJ/mol
C.5 kJ/mol
D.7 kJ/mol
Solution
$\Delta H = E_{af} - E_{ab} \Rightarrow 72 = 77 - E_{ab} \Rightarrow E_{ab} = 5\text{ kJ/mol}$
Create a free account to view solution
View Solution FreeTopic: Chemical Kinetics and Nuclear Chemistry·Practice all Chemical Kinetics and Nuclear Chemistry questions
More Chemical Kinetics and Nuclear Chemistry Questions
The rate of a chemical reaction doubles for every 10oC rise of temperature. If the temperature is raised by 50oC, the ra...In a reaction, A + B → Product, rate is doubled when the concentration of B is doubled, and rateincreases by a fac...If no catalyst (H+) is present in acid hydrolysis of ester (in above question) then rate constant K is :...Consider the chemical reaction N2(g) + 3H2(g) → 2NH3(g). The rate of this reaction can be expressed in terms of time der...T50 (Half-life period) of first-order reaction is 10 minute. Starting with 10 mol L-1, rate after 20 minute is :...