Classify each organic reaction as combustion, alkane substitution, alkene addition or hydrogenation, aromatic substitution, or alcohol substitution, elimination, or oxidation.
d.

Organic reactions can be classified into several categories based on their mechanisms and the types of reactants involved. Common classifications include combustion, where organic compounds react with oxygen to produce carbon dioxide and water; substitution reactions, where an atom or group in a molecule is replaced by another; and addition reactions, where atoms are added to a molecule, often seen in alkenes.

Combustion reactions involve the rapid reaction of a substance with oxygen, resulting in the release of energy in the form of heat and light. In organic chemistry, this typically refers to the burning of hydrocarbons, producing carbon dioxide and water as byproducts. Understanding combustion is essential for analyzing energy production and environmental impacts.

Substitution reactions involve the replacement of one functional group in a molecule with another, commonly seen in alkanes and aromatic compounds. In contrast, addition reactions occur when two reactants combine to form a single product, often involving alkenes where double bonds are broken to allow new atoms to attach. Recognizing these patterns is crucial for predicting reaction outcomes.