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Which of the following represents a saturated cyclic hydrocarbon with the molecular formula C 6 H 12?
Hexene
Cyclohexane
Benzene
Hexane
Cyclohexane
Cyclohexane is a saturated cyclic hydrocarbon with the molecular formula C6H12, where all carbon atoms are linked by single bonds in a ring structure. A saturated hydrocarbon means it contains no double or triple bonds, satisfying the general formula CnH2n for cycloalkanes.
Cyclohexane is a saturated cyclic hydrocarbon with the molecular formula C6H12, where all carbon atoms are linked by single bonds in a ring structure. A saturated hydrocarbon means it contains no double or triple bonds, satisfying the general formula CnH2n for cycloalkanes.
Think of a straight string (n-hexane) being joined at the ends to form a closed loop (cyclohexane); the connection process removes two 'loose ends' (hydrogens), turning a chain into a ring.
CnH2n — General formula for cycloalkanes
CnH2n+2 — General formula for open-chain alkanes
The general formula for non-cyclic alkanes is CnH2n+2. When a chain forms a ring, two hydrogen atoms are lost to create the additional C-C bond required for closure, resulting in the general formula CnH2n. Because Cyclohexane contains only single covalent bonds, it is chemically classified as saturated.
Cyclic hydrocarbons with only single bonds are known as cycloalkanes.
The presence of a ring accounts for the loss of two hydrogens compared to the corresponding straight-chain alkane.
Cyclohexane is a six-membered ring commonly used as a non-polar solvent.
Highly stable due to the lack of ring strain in the chair conformation.
Highly flammable organic solvent.
Used as a solvent in chemical industries.
Intermediate in the production of adipic acid and caprolactam for nylon manufacturing.
Hexene (C6H12) is an alkene (unsaturated) with a double bond.
Benzene (C6H6) is an aromatic hydrocarbon (highly unsaturated) with alternating double bonds.
Hexane (C6H14) is a saturated straight-chain alkane.
B is correct — Cyclohexane satisfies the CnH2n formula for a saturated ring structure.
Always verify if the compound is cyclic or open-chain first; then check for unsaturation by comparing the ratio of Hydrogen to Carbon atoms.