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Ethane, a colourless, odourless, gaseous hydrocarbon (compound of hydrogen and carbon), belonging to the paraffin series; its chemical formula is C2H6. Ethane is structurally the simplest hydrocarbon that contains a single carbonâcarbon bond. The second most important constituent of natural gas, it also occurs dissolved in petroleum oils and as a by-product of oil refinery operations and of the carbonization of coal. zoom_in.
Ethane and ethanol have different molecular structures. Ethane is 2 carbon atoms surounded by 6 hydrogen atoms, while ethanol is has one of the hydrogen atoms replaced w â¦ ith an OH molecule (hydroxyl group). This hydroxyl group polarizes the molecule. This polarization causes the surrounding molecules to attract to one another much more than non-polarized molecules would.