Final answer:
The nature of KOH is that of a strong base because it dissociates almost completely in water to release hydroxide ions (OH¯), making it a strong electrolyte.
Step-by-step explanation:
The nature of KOH (potassium hydroxide) is that of a strong base. This classification comes from the fact that KOH is a hydroxide of an alkali metal, and it dissociates almost completely into ions when dissolved in water. The dissociation equation for KOH in water is as follows:
KOH(s) → K+ (aq) + OH¯(aq)
As a strong electrolyte, KOH releases hydroxide ions (OH¯) readily in an aqueous solution, thereby confirming its strong basic nature. Strong bases such as KOH are distinct from weak bases, which only dissociate partially in water, and from acids, which release hydrogen ions (H+). Therefore, the correct option for the nature of KOH is option 3, a strong base.