Hi- Can you please provide a detailed step by step process for this question? Al
ID: 489254 • Letter: H
Question
Hi- Can you please provide a detailed step by step process for this question? Also, what do the numbers in parenthesis mean? I know that we would have to write the rate mechanism based on the slow one. Thanks. Correct Answer is in bold.
A possible mechanism for the stoichiometric reaction Br2 + 2NO ® 2NOBr is shown below. The rate law for formation of NOBr based on this mechanism is ________.
2NO N2O2 (fast, equilibrium) (1, 1)
N2O2 + Br2 ® 2NOBr (slow) (2)
k1[NO]½
k1[Br2]½
(k2k1/k1)[NO]2[Br2]
(k1/k1)2[NO]2
(k2k1/k1)[NO][Br2]2
k1[NO]½
k1[Br2]½
(k2k1/k1)[NO]2[Br2]
(k1/k1)2[NO]2
(k2k1/k1)[NO][Br2]2
Explanation / Answer
The rate equation for the reaction is
Rate = k[NO]2[Br2]
NO molecules are not involved in slow step, but N2O2 (not available readily as reactant) is formed by two NO molecules. so order with respect to NO is two and order with repect to Br2 is one.
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