Multiple choice general knowledge science & technology Potassium bromide KOH KI KBr KCl Reveal answer Fill a bubble to check yourself C Correct answer Explanation Potassium bromide has the chemical formula KBr, formed from potassium (K) and bromine (Br). It's a salt used historically as an anticonvulsant and sedative. KOH is potassium hydroxide, KI is potassium iodide, and KCl is potassium chloride.