text: <unk> , also known as orthophosphoric acid or<unk> (V) acid, is a mineral (inorganic) acid, one of many phosphorus oxoacids, having the chemical formula<unk> . Alternatively, orthophosphoric acid molecules can combine with themselves to form a variety of compounds referred to as<unk> s in a more general way. The term<unk> " can also refer to a chemical or reagent consisting of<unk> s, usually mostly orthophosphoric acid.
option_0: Phosphoric acid
option_1: Boric acid
option_2: Hydrochloric acid
option_3: Dichloroacetic acid
option_4: Gold salts
option_5: Calcium arsenate
option_6: Dihydroxialumini sodium carbonate
option_7: Pyrogallol