• Question: whst is the formula for propain

    Asked by gilly to Iain on 15 Jun 2015.
    • Photo: Iain Bethune

      Iain Bethune answered on 15 Jun 2015:

      Propane is C3H8 – the three carbons form a chain, and then add hydrogen on all the spare bonds (each Carbon can make 4 bonds).

      Propan is one of the ‘alkanes’ and they all have the formula C(N)H(2N-2).

      So the first is Methane CH4, then Ethane (C2H6), then Propane. There are also Butane, Pentane, Hexane, Septane, Octane, Nonane, Decane and you can keep going!

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