Final answer:
Adding 'Prist' to fuel serves as an antiknock agent improving octane rating, reduces harmful emissions in conjunction with catalytic converters, and contributes to better fuel economy and lower CO₂ emissions.
Step-by-step explanation:
The question concerns the benefits of adding a substance known as 'Prist' to fuel. Here are three main advantages of adding 'Prist' to fuel:
- It acts as an antiknock agent or octane enhancer, improving the octane rating of the fuel which can result in better combustion efficiency and performance of the engine.
- Addition of 'Prist' can potentially lead to a reduction in harmful emissions like hydrocarbons and nitrogen oxides when used with catalytic converters, contributing to a healthier environment.
- By improving the fuel standard and reducing exposure to pollutants, it promotes overall fuel economy and can help in minimizing the carbon footprint by reducing CO₂ emissions.
It is important to note that historically, tetraethyllead [(C₂H₅)4Pb] served as an antiknock agent, but due to its toxicity, it has been phased out. Modern octane enhancers, like 'Prist', offer a safer alternative to increase fuel performance without the detrimental health and environmental impacts of lead compounds.