What is the general formula for alkanes with 'n' carbon atoms?
CnH2n+2
Alkanes are saturated hydrocarbons with only single bonds.
Each carbon forms four bonds; a chain of n carbons carries 2n + 2 hydrogen atoms, e.g. methane CH4 (n = 1) and ethane C2H6 (n = 2).
CnH2n is the formula of alkenes and CnH2n-2 of alkynes.
Hence, the answer is CnH2n+2.
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