What determines whether aldehydes, ketones, or a mixture of both is...

In the ozonolysis of alkenes, ozone (O₃) is used to cleave the double bond, resulting in the formation of carbonyl compounds, which can be aldehydes or ketones. The specific product formed depends on the substitution pattern of the alkene. After ozonolysis, the reaction mixture is treated with reducing agents like zinc dust and water to convert any intermediate ozonides into aldehydes or ketones. The choice of aldehyde or ketone product is determined by the arrangement of substituents on the original alkene molecule.