Detergents are sodium salts of alkyl sulfates or long-chain benzene sulfonic acids. Most detergents are sulfonates of alkyl benzene. As soap's carboxylate binds calcium and other ions more readily than detergent's sulfonate does in hard water, detergents are typically more soluble in it than soap. Detergents are frequently used for household cleaning. Laundry and dishwashing detergents are...