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AP® Chemistry

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Catalyst

APCHEM-GXQ18T

Laboratory experiments often employ various chemical decomposition and synthesis reactions as a means of determining spontaneity of a reaction.

Based on experience and knowledge of reactions, which of the following reactions, with no additional changes in the system, would benefit the most from the use of a catalyst?

A

Carboxylic acid decomposing to form carbon dioxide and water in an open system.

B

Copper metal mixing with carbon dioxide and water to form copper (II) carbonate, tarnished copper.

C

Hydrogen peroxide decomposing to form water and oxygen gas in an open system.

D

Nitrogen and hydrogen forming ammonia in an open system.