Butane has a higher density than water.

C6H14 (hexane) has a molecular weight of approximately 86 g/mol, while C7H16 (heptane) has a molecular weight of approximately 100 g/mol. The closest is C6H14.

Butane has the highest boiling point among the given alkanes due to its larger molecular size.

Methane has the lowest density among the given alkanes.

Methane (CH4) has the lowest molecular weight among the given alkanes.

Methane is a gas at room temperature.

Isobutane is a branched alkane, while butane, pentane, and hexane are straight-chain alkanes.

Butane is the least branched alkane among the options.

Methane is the least soluble in water due to its nonpolar nature.

Pentene has the highest boiling point due to its larger molecular size and increased van der Waals forces.

2-methylpropene is more reactive towards electrophilic addition due to steric hindrance being lower compared to other options.

2-Butene is more stable than 1-Butene due to hyperconjugation and steric hindrance.

2-Butene is more stable than 1-Butene due to hyperconjugation and steric factors.

2-butyne is a symmetrical alkyne.

Acetylene (ethyne) is the most acidic among the given alkynes due to the sp hybridization of carbon.

2-butyne is more stable than 1-butyne due to steric hindrance and hyperconjugation.

Ethyne (C2H2) is the simplest alkyne.

2-bromobutane can undergo elimination to form both 1-butene and 2-butene.

Benzene can undergo Friedel-Crafts alkylation, a reaction where an alkyl group is introduced to the aromatic ring.

Ethylene can undergo addition polymerization to form polyethylene, a common plastic.

C6H12 can be cyclohexane, which is a cyclic hydrocarbon.

C5H10 can be a cycloalkane (cyclopentane) as it forms a ring structure.

C5H12 (pentane) is a saturated hydrocarbon with single bonds only.

C4H8 is an alkene as it contains a carbon-carbon double bond.

C5H8 is an alkyne, as it follows the general formula C_nH_(2n-2).

Phenylacetylene is an aromatic alkyne as it contains a phenyl group attached to a triple bond.

Benzene is a cyclic compound with delocalized pi electrons, making it aromatic.

Cyclopropene is an example of a cyclic alkene.

Cyclooctatetraene is not aromatic because it does not satisfy Huckel's rule and does not have a planar structure.

Cyclooctatetraene is not aromatic because it does not satisfy Huckel's rule; it is non-planar and does not have a continuous ring of p orbitals.