Write down the molecular formula and an use of each of the followings [1+1] i) Boric acid ii) Orthophosphoric acid

i) Boric acid

• Molecular formula: $\mathrm{H}{}_3\mathrm{BO}{}_3$ (or $\mathrm{B}(\mathrm{OH}){}_3$)
• Use: Used as an antiseptic for cleaning wounds and as a mild disinfectant. It is also used in the manufacture of borosilicate glass, as a flame retardant, and in cosmetics (e.g., eye washes).

ii) Orthophosphoric acid

• Molecular formula: $\mathrm{H}{}_3\mathrm{PO}{}_4$
• Use: Used in the food industry as a flavor enhancer (e.g., in cola drinks). It is also used in detergents, as a water softener, in fertilizers, and in the manufacture of phosphates for various industrial applications. Additionally, it serves as an electrolyte replacement in medical treatments.