Final answer:
Potassium hydroxide dissolves in water to produce potassium ions and hydroxide ions.
Step-by-step explanation:
Potassium hydroxide (KOH) is an inorganic compound that is highly soluble and dissociates in water to produce potassium ions (K+) and hydroxide ions (OH-). When 8.5 g of potassium hydroxide powder are placed in 100.0 g of water, the potassium hydroxide dissolves and the resulting solution contains potassium ions and hydroxide ions.