Chemistry 1027A/B Chapter Notes -Heme, Peptide, Energy Carrier
Document Summary
Fossil fuels are currently our primary source of energy. Formed through anaerobic(w. out oxygen) decay of plants and animals over time. Three forms: natural gas, coal and crude oil, or petroleum. Refined by separation into fractions based on boiling points. Octane rating - scale for rating knocking properties of gasoline knocking occcurs when fuel burns too quickly and explodes the % of isooctane in the mixture with identical knocking properties. More hydrocarbons added to a gasoline mixture increases octane rating. Octane is a bad fuel ; isooctane is a good fuel. Good fuel is one that has a high octane rating thus iso-octane is better fuel than octane. Octane is c8h18 and iso-octane is 8/18 page 1. Octane rating is the scale for rating knocking properties of gasoline. Knocking occurs when fuel burns too quickly and explodes . Octane rating increases as branched hydrocarbons are added to a gasoline mixture.