AP Chemistry
5.11 Catalysis
5.2 Introduction to Rate Law
5.1 Reaction Rates
A student investigates the decomposition of ethanol vapor catalyzed by a heated platinum surface, represented by the following equation.
\[ \text{C}_2\text{H}_5\text{OH}(g) \xrightarrow{\text{Pt}(s)} \text{CH}_3\text{CHO}(g) + \text{H}_2(g) \]
The student determines that at high initial partial pressures of \(\text{C}_2\text{H}_5\text{OH}(g)\), the rate of product formation is constant over time and does not change when additional \(\text{C}_2\text{H}_5\text{OH}(g)\) is introduced into the reaction vessel. Which of the following correctly identifies the reaction order with respect to \(\text{C}_2\text{H}_5\text{OH}\) under these conditions and provides the best explanation?
\[ \text{C}_2\text{H}_5\text{OH}(g) \xrightarrow{\text{Pt}(s)} \text{CH}_3\text{CHO}(g) + \text{H}_2(g) \]
The student determines that at high initial partial pressures of \(\text{C}_2\text{H}_5\text{OH}(g)\), the rate of product formation is constant over time and does not change when additional \(\text{C}_2\text{H}_5\text{OH}(g)\) is introduced into the reaction vessel. Which of the following correctly identifies the reaction order with respect to \(\text{C}_2\text{H}_5\text{OH}\) under these conditions and provides the best explanation?
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