The formulas of some monoprotic acids are HCl, HNO3, CH3CO2H and C6H5CO2H. Their names are hydrochloric acid, nitric acid, acetic acid and benzoic acid respectively.
A monoprotic acid has one positively charged hydrogen ion. As a Brønsted acid, it donates this ion.
Hydrochloric acid is a colorless liquid that has a pungent smell with high solubility in water. It is soluble in ether, alcohol and benzene, but insoluble in hydrocarbons. Chemically, it is highly corrosive and reaction with a metal causes hydrogen gas release. Hydrochloric acid is utilized in the production of dyes, fertilizers, paint pigments, phosphoric acid, ammonium chloride and chlorine dioxide. Other uses of hydrochloric acid include as a lab reagent, fungicide, bactericide and virucide for disinfecting kitchens, bathrooms, hospitals, food preparation locations and other areas.
Benzoic acid, which belongs to the aromatic carboxylic acid family, is in white crystal or powder form. Having a pleasant, mild smell, it is widely used as a raw material for the manufacture of caprolactam, potassium and sodium benzoates, phenol and other chemicals. Benzoic acid is also commonly utilized as a preservative in juices, foods, oils and fats. Other uses are as an antiseptic ointment ingredient for skin's fungal treatment and corrosion inhibitor. This acid can be found naturally in prunes, anise seed oils, cranberries, prunes and ripe cloves.