Chemistry Practice Problems Reaction Mechanism Practice Problems Solution: We have seen a number of reactions in which a sing...

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Solution: We have seen a number of reactions in which a single reactant forms products. For example, consider the following first-order reaction: CH3NC(g) → CH3CN(g). However, we also learned that gas-phase reactions occur through collisions.Another possibility is that the reaction occurs through more than one step. For example, a possible mechanism involves one step in which the two CH3NC molecules collide, resulting in the "activation" of one of them. In a second step, the activated molecule goes on to form the product. Determine which step must be rate determining in order for the kinetics of the reaction to be first order.

Problem

We have seen a number of reactions in which a single reactant forms products. For example, consider the following first-order reaction: CH3NC(g) → CH3CN(g). However, we also learned that gas-phase reactions occur through collisions.

Another possibility is that the reaction occurs through more than one step. For example, a possible mechanism involves one step in which the two CH3NC molecules collide, resulting in the "activation" of one of them. In a second step, the activated molecule goes on to form the product. Determine which step must be rate determining in order for the kinetics of the reaction to be first order.