Ethane

      H      H   H      rotation \    H         H
      |       \ /       ==========    |         |
      C--------C        \             C---------C
     / \       |                     / \       / \
    H   H      H                    H   H     H   H

Basic Data:

• Melting point: -183.3º C
• Boiling point: -88.6º C
• pK_a: 50
• density: 0.572 at -100º C relative to water at 4º C.
• Molecular weight: 30.07
• Combustion of ethane with oxygen: 2 C₂H₆ + 7 O₂ -> 4 CO₂ + 6 H₂O which creates ΔHº = 1559.9 kJ/kmol of ethane of energy.
• Heat of formation: ΔHº_f = -84.67 kJ/kmol.

Eth"ane (?), n. [From Ether.] Chem.

A gaseous hydrocarbon, C2H6, forming a constituent of ordinary illuminating gas. It is the second member of the paraffin series, and its most important derivatives are common alcohol, aldehyde, ether, and acetic acid. Called also dimethyl.

© Webster 1913.