The exposed regions of the photoresist film become soluble in aqueous base; thus allowing the formation of a relief image during development.

Diazomethane is prepared by hydrolysis of an ethereal solution of an N-methyl nitrosamide with aqueous base.

It is soluble in aqueous base to give soaps called oleates.

Methyl acetate is not stable in the presence of strong aqueous bases or aqueous acids.

Sulfite results from the reaction of aqueous base and sulfur dioxide.

Reaction with 4-hydroxybenzaldehyde and subsequent treatment with aqueous base provides Brooker's merocyanine.

It arises from the reaction of aqueous base with carbon disulfide:

In an aqueous base, hydroxyl ions are better nucleophiles than polar molecules such as water.

It is the hydrolysis of a triglyceride (fat) with an aqueous base such as sodium hydroxide (NaOH).

Bisphenol A and phosgene react to give polycarbonate under biphasic conditions; the hydrochloric acid is scavenged with aqueous base: