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. ᐃH for this reaction is 72 kJ at 500 K and Ea is 77 kJ mol-1, then Ea for the bimolecular recombination of two OH radicals to form H2O and O is :
Options
A.3 kJ mol-1
B.4 kJ mol-1
C.5 kJ mol-1
D.7 kJ mol-1
Solution
H2O + O → 2OH → ᐃH = 72 kg/mole
and Ea = 77 Kg/mole
Then we know ᐃH = Ea - Eb
72 = 77 - Eb
Eb = 5 KJ/mole
and Ea = 77 Kg/mole
Then we know ᐃH = Ea - Eb
72 = 77 - Eb
Eb = 5 KJ/mole
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
Which of the following statement is/are incorrect?...The inversion of cane sugar proceeds with half life of 500 min at pH 5 for any concentration of sugar. However, if pH = ...At a certain temperature, the first order rate constant k1 is found to be smaller than the second order rate constant k2...Table I (reactions) and table II (methods) have been matchedCorrect matching is :...Which reaction will occur at the fastest rate in water...