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 an aromatic compound due to its cyclic structure and delocalized pi electrons.

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

EDTA (ethylenediaminetetraacetic acid) is a well-known chelating agent.

Cyclopropene is an example of a cyclic alkene.

Butan-2-one is a ketone as it has the carbonyl group (C=O) located between two carbon atoms.

BF3 is a Lewis acid because it can accept an electron pair due to its incomplete octet.

HCl has a polar covalent bond due to the difference in electronegativity between hydrogen and chlorine.

Sodium chloride (NaCl) is a classic example of a salt formed from the reaction of an acid and a base.

CH3CHO is an aldehyde, characterized by the -CHO functional group.

C4H10 is an alkane, which is a saturated hydrocarbon with single bonds only.

Alkenes are hydrocarbons that contain at least one carbon-carbon double bond. C2H4 (ethylene) is an alkene.

Benzene is a classic example of an aromatic compound due to its cyclic structure and delocalized pi electrons.

Cis-2-butene has different spatial arrangements of groups around the double bond, making it a geometric isomer.

C4H10 can exist as butane and isobutane, which are structural isomers.

Benzene is an aromatic compound due to its cyclic structure and delocalized pi electrons.

Sodium benzoate is widely used as a food preservative to inhibit the growth of bacteria and fungi.

Sodium benzoate is widely used as a food preservative to prevent spoilage.

Aspartame is a widely used artificial sweetener found in many low-calorie foods and beverages.

SiO2 is formed from Silicon, which is a p-block element.

NaCl is formed by sodium, which is an s-block element.

Sodium reacts with water to form sodium hydroxide (NaOH) and hydrogen gas.

Phenol is less acidic compared to the other acids listed due to the +M effect of the aromatic ring, which destabilizes the negative charge on the phenoxide ion.

CCl3COOH is most acidic due to the strong -I effect of the -CCl3 group.

Benzaldehyde is most affected by the mesomeric effect due to the presence of the carbonyl group which can participate in resonance.

Benzene is highly stabilized by resonance due to its delocalized pi electrons.

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.