Question

Carbon monoxide and nitrogen monoxide react to produce carbon dioxide and nitrogen gas. If the system contains platinum, then less energy is required for the reaction to occur. Which term best describes the role of platinum in the system? (1 point)

reactant
energy
product
catalyst

Answer 1

Platinum is playing the role of a catalyst in this system.

So, option (d) is correct.

Let us see, how platinum is acting as a catalyst.

• Catalyst are those substances which increases the rate of a chemical reaction without undergoing any change in its mass or chemical composition.
• Catalysts decreases the activation energy of a reaction.
• In the given question it is mentioned that if the system contains platinum then less energy is required. Hence platinum is acting as a catalyst here as it is reducing the activation energy needed for the reaction to occur.