AP Chemistry
5.8 Reaction Mechanism and Rate Law
5.7 Introduction to Reaction Mechanisms
5.4 Elementary Reactions
The reaction between nitrogen dioxide and fluorine gas is represented by the following balanced equation.
\[ 2\,\text{NO}_2(g) + \text{F}_2(g) \rightarrow 2\,\text{NO}_2\text{F}(g) \]
A proposed two-step mechanism for the reaction is shown below.
\[ \text{Step 1: } \text{NO}_2(g) + \text{F}_2(g) \rightarrow \text{NO}_2\text{F}(g) + \text{F}(g) \quad (\text{slow}) \]
\[ \text{Step 2: } \text{NO}_2(g) + \text{F}(g) \rightarrow \text{NO}_2\text{F}(g) \quad (\text{fast}) \]
Based on the proposed mechanism, which of the following predicts the factor by which the initial rate of the reaction will change if the initial concentration of \(\text{NO}_2(g)\) is doubled while the initial concentration of \(\text{F}_2(g)\) remains constant, and correctly identifies an intermediate in the reaction?
\[ 2\,\text{NO}_2(g) + \text{F}_2(g) \rightarrow 2\,\text{NO}_2\text{F}(g) \]
A proposed two-step mechanism for the reaction is shown below.
\[ \text{Step 1: } \text{NO}_2(g) + \text{F}_2(g) \rightarrow \text{NO}_2\text{F}(g) + \text{F}(g) \quad (\text{slow}) \]
\[ \text{Step 2: } \text{NO}_2(g) + \text{F}(g) \rightarrow \text{NO}_2\text{F}(g) \quad (\text{fast}) \]
Based on the proposed mechanism, which of the following predicts the factor by which the initial rate of the reaction will change if the initial concentration of \(\text{NO}_2(g)\) is doubled while the initial concentration of \(\text{F}_2(g)\) remains constant, and correctly identifies an intermediate in the reaction?
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