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Chemical reactions are those reactions where the reactants are reacted and form desired products. There are different types of chemical reactions depending upon the catalyst, temperature, reagents, and so on.

Aqueous acid plays a vital role in chemical reactions. ${\mathrm{H}}_3{\mathrm{O}}^{+}$ provides an acidic medium in presence of water in the chemical reaction and functions to releases hydrogen ion that is positive in nature.

a. When $\mathrm{methyl}\mathrm{β}-\mathrm{D}-\mathrm{galactoside}$ is treated with aqueous acid, the glucose of both anomers is formed with the byproduct of methyl alcohol.

Formation of glucose and methylalcoholb. When triacetone triperioxide is threated with aqueous acid methylglucoside of both anomers and ethanol are formed.

Formation of methylglucoside and ethanolc. When validamine is treated with aqueous acid ribose of both anomers and ethylamine are formed.

Formation of ribose and ethylamine