In aqueous solution, is potassium hydroxide, $KOH$, considered a strong base?

• A. No; $KOH$ is a weak base that only partially dissociates in water.
• B. No; $KOH$ is amphoteric and behaves primarily as an acid in water.
• C. Yes; $KOH$ dissociates essentially completely to produce $O^H$ in water.
• D. It is neither strong nor weak because $KOH$ does not dissolve in water.

Answer: (C)

Verified step by step guidance

1. Recall that a strong base is a substance that dissociates completely in aqueous solution to produce hydroxide ions (OH⁻).
2. Identify potassium hydroxide (KOH) as an ionic compound composed of K⁺ and OH⁻ ions.
3. Understand that when KOH dissolves in water, it dissociates fully into K⁺ and OH⁻ ions, increasing the hydroxide ion concentration significantly.
4. Compare this behavior to weak bases, which only partially dissociate and establish an equilibrium in solution, unlike KOH.
5. Conclude that because KOH dissociates essentially completely in water to produce OH⁻ ions, it is classified as a strong base.