AP® Chemistry

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Interpretation of a Reaction


The following reaction:

$$C_2H_5OH \rightarrow C_2H_4O + H_2$$

...occurs in a copper reaction chamber. The graph of [Ethanol] versus time is a straight line with a negative slope. This is an elementary, single step reaction.

Based on the information, which of the following is NOT true?


Copper must be a heterogeneous catalyst since the material used for the reaction chamber was specifically mentioned.


A straight line plot of [reactant] vs. time with a negative slope indicates that the reaction is zero order.


An intermediate will be formed during the reaction since there is one reactant and two products.


For this reaction, the rate law can be determined from the graph and the balanced equation because the reaction is a single-step, elementary reaction.