Alkanes General formula:CnHzn+2 Found in everything from natural gas to petroleum. The smaller alkanes have very low boiling points (b.p.);therefore,they are gases. CH4 C2H6 C3Ha b.p.-160℃ -89oC -420C 2013 Pearson Education,Inc. Chapter 3 3 © 2013 Pearson Education, Inc. Alkanes • General formula: CnH2n+2 • Found in everything from natural gas to petroleum. • The smaller alkanes have very low boiling points (b. p.); therefore, they are gases. CH4 C2H6 C3H8 b. p. -160 oC -89 oC -42 oC Chapter 3 3