The primary function of three-way catalytic converters in automobile exhaust systems is to convert nitric oxide into dinitrogen and oxygen, and carbon monoxide and hydrocarbons into carbon dioxide and water vapor, thus reducing harmful emissions. Correct option is C.
The primary function of the three-way catalytic converters in automobile exhaust systems is the conversion of harmful emissions into less harmful substances. Specifically, they convert nitric oxide (NO) into dinitrogen (N2) and oxygen (O2), carbon monoxide (CO) into carbon dioxide (CO2), and hydrocarbons such as octane into water vapor (H2O). This process is catalyzed by a surface impregnated with a platinum-rhodium catalyst. These reactions help to reduce the amount of toxic emissions, including nitrogen oxides, carbon monoxide, and volatile organic compounds (VOCs), that contribute to the formation of ozone and smog in the atmosphere.
Complete question is:
What is the primary function of the three-way catalytic converters in automobile exhaust systems among the following options:
a) creating large amounts of CFCs,
b) the conversion of ozone to oxygen,
c) converting NO into O2 and N2, or
d) increasing the VOC emitted by the vehicle?