Question

If the reaction H2 + Br2 2HBr has a rate law that can be described by k[H2][Br2]1/2, which series of reactions is a possible mechanism for the reaction?

a. Br2 2Br (fast)
Br + H2 HBr + H (slow)
HBr + H + Br → 2HBr (fast)

b. Br2 2Br (slow)
Br + H2 HBr + H (fast)
HBr + H + Br 2HBr (fast)

c.Br2 2Br (slow)
2Br + H2 2HBr (fast)

d. Br2 2Br (fast)
Br + H2 HBr + H (fast)
HBr + H + Br 2HBr (slow)

thanks in advance :)

Answer 1

can someone help with this problem?

Answer 2

The correct answer is D. :)

Answer 3

Nvm, it's A!!