Multiple choice

What is the general formula of alkanes?

  1. CnH2n

  2. CnH2n+2

  3. CnH2n-2

  4. CnH2n-4
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Alkanes are saturated hydrocarbons with the general formula CnH2n+2, where each carbon atom forms four single bonds. For alkenes it's CnH2n, for alkynes it's CnH2n-2, and option D doesn't represent any standard homologous series. The '+2' accounts for the extra hydrogens needed for saturation.

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