Published by:
CGP EDU Academic Team
Published on: August 14, 2026
The reaction of hydrogen, and iodine monochloride is represented by the equation:
H 2 (g) + 2ICl(g) 
2HCl(g) + I 2 (g)
This reaction is first–order in H 2 (g) and also first–order in ICl(g). Which of these proposed mechanism can be consistent with the given information about this reaction?
Mechanism I : H 2 (g) + 2ICl(g) 
2HCl(g) + I 2 (g)
Mechanism II : H 2 (g) + ICl(g) 
HCl(g) + HI(g)
HI(g) + ICl(g) 
HCl(g) + I 2 (g)
Text Solution
Verified by ExpertsThe correct answer is:
B
H 2 (g) + 2ICl(g) 
2HCl(g) + I 2 (g)
Proposed mechanism
MechanismH 2 (g) + ICl(g) 
HCl(g) + HI (g)
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