For the reaction: 2 h2 + 2 no → n2 + 2 h2othe observed rate expression, under some conditions, is: rate = k[h2][no]which of the following mechanisms are consistent with these data? select all that are true. step 1 2 no → n2o2 (slow) step 2 n2o2 + h2 → n2o + h2o (fast) step 3 n2o + h2 → n2 + h2o (fast)step 1 no + no ⇌ n2o2 (fast) step 2 n2o2 + h2 → n2 + h2o + o (slow) step 3 o + h2 → h2o (fast)step 1 2 no ⇌ n2o2 (fast) step 2 n2o2 + h2 → n2o + h2o (slow) step 3 n2o + h2 → n2 + h2o (fast)step 1 h2 + 2 no → n2o + h2o (slow) step 2 n2o + h2 → n2 + h2o (fast)

The correct mechanism for the reaction based on the given rate is:

Step 1 :

Step 2:

Explanation:

The reaction rate of a muti-step reaction is determined by the slowest step of the reaction. Because of this reason, it is known as the rate-determining step of the reaction.

The given rate expression has the concentrations of .

This means that the slowest step of the mechanism must involve .

Among the proposed mechanisms, this criterion is met in the mechanism:

( Reason: In the above mechanism the slowest step involves . )

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