CHEM 1A03 Chapter Notes - Chapter 5: Hong Kong Diploma Of Secondary Education, Fractional Distillation, Asphalt

• School: McMaster University
• Department: Chemistry
• Course: CHEM 1A03
• Professor: David Brock

Document Summary

Hkdse chemistry (v) fossil fuels and carbon compounds/1. Fossil fuels: fuels from the remains of plants and animals. Petroleum (crude oil): fossil fuel from sea life. Used as fuels, lubricants and source of hydrocarbons to manufacture other chemicals. Oil re%ning: separation of crude oil by fractional distillation into di fractions with di boiling point ranges. Trends in oil fraction: an oil fraction with greater boiling point range has longer carbon chains, darker colour, higher viscosity, lower volatility, lower "ammability and burns less completely. Hkdse chemistry (v) fossil fuels and carbon compounds/2. Formation of acid rain: solution of sulphur dioxide and nitrogen oxides in rainwater to form sulphurous acid (h2so3), nitrous acid (hno2) and nitric acid (hno3). E+ects of acid rain: make soil acidic and a plant growth, make water acidic and a -sh and water plant growth, corrode building materials by neutralizing calcium carbonate in limestone, marble, sandstone, cement and concrete.