Question

the reduction catalyst in a catalytic converter helps to:

a. reduce the oxides of nitrogen molecules into their base compounds.
b. oxidize any unburned hydrocarbons and carbon monoxide.
c. convert exhaust water to oxygen and hydrogen.
d. oxidize nitrogen before releasing it into the atmosphere.

Explanation:

• Catalytic converters have two main types of catalysts: reduction and oxidation.
• The reduction catalyst specifically acts on nitrogen oxides (\(NO_x\)).
• It facilitates the reduction reaction of nitrogen oxides. For example, \(2NO + 2CO\xrightarrow{\text{catalyst}}N_2 + 2CO_2\) (a simplified form of a reaction that occurs in the presence of a reduction catalyst in a catalytic converter).
• Option b is related to the function of the oxidation catalyst (which oxidizes un - burned hydrocarbons and \(CO\)). Option c is not a common reaction in catalytic converters. Option d is incorrect as nitrogen is not oxidized in the context of the reduction catalyst's function in a catalytic converter.

Answer:

A. Reduce the oxides of nitrogen molecules into their base compounds.