What are the molecular formulas of the second and fourth members of the series with the general formula CnH2n?
Question
What are the molecular formulas of the second and fourth members of the series with the general formula C<sub>n</sub>H<sub>2n</sub>?
Solution
The general formula given is for a series of hydrocarbons known as alkenes. The general formula for alkenes is CnH2n, where n is the number of carbon atoms.
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The second member of this series would have n=2. Substituting n=2 into the formula CnH2n gives C2H4.
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The fourth member of this series would have n=4. Substituting n=4 into the formula CnH2n gives C4H8.
So, the molecular formulas of the second and fourth members of the series are C2H4 and C4H8, respectively.
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