Ch_322a_4.01

Ch_322a_4.01 - Chapter 4 Alkanes and Cycloalkanes:...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
Alkanes and Cycloalkanes Alkanes are saturated hydrocarbons meaning they have the maximum number of hydrogens for the carbon number. Alkanes have the general formula C n H 2n+2 . Cycloalkanes are cyclic structures with the carbon atoms in a ring. Although cycloalkanes are saturated hydrocarbons, the general formula is C n H 2n because two hydrogens are lost when a C-C bond is made to form a ring. CH 3 CH 2 CH 2 CH 2 CH 2 CH 3 hexane C 6 H 14 cyclohexane C 6 H 12 Chapter 4 Alkanes and Cycloalkanes: Conformations of Molecules
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Sources of Alkanes: Petroleum and Natural Gas Petroleum is the source of alkanes. It is a complex mixture of mostly alkanes and aromatic hydrocarbons with smaller amounts of oxygen-, nitrogen-, and sulfur-containing compounds. Natural gas is a gaseous mixture of hydrocarbons recovered from natural sources. It is mostly methane (CH 4 , BP -162 o C) with small amounts of ethane (C 2 H 6 , BP -88 o C) and propane (C 3 H 8 , BP -42 o ). Petroleum Refining Liquid petroleum and natural gas are usually separated at the wellhead and shipped independently to processing (refining) plants. The liquid petroleum (crude) is separated by distillation according to the volatility (BPs) of the different size hydrocarbons. The fractions collected by refining are still mixtures of hydrocarbons that have commercial value.
Background image of page 2
Hydrocarbon Fractions from Petroleum boiling range of fraction ( o C) size range name and use below 20 C 1 to C 4 natural gas, bottled gas, petrochemicals 20 to 60 C 5 to C 6 petroleum "ether". solvents
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 03/02/2009 for the course CHEM 322A taught by Professor Singer during the Spring '08 term at USC.

Page1 / 9

Ch_322a_4.01 - Chapter 4 Alkanes and Cycloalkanes:...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online