Properties of Potassium Hydroxide

The video tutorial explains the composition and behavior of potassium hydroxide (KOH). It begins by identifying KOH as an ionic compound made of potassium and hydroxide ions. The tutorial discusses the charges of these ions, with potassium having a +1 charge and hydroxide a -1 charge, resulting in a net charge of zero. It further explains that when KOH is dissolved in water, it dissociates into its constituent ions, K+ and OH-, and acts as a strong base. The video concludes by summarizing that KOH consists of two ions: the potassium ion and the hydroxide ion.

What type of compound is potassium hydroxide (KOH)?

• Covalent compound

• Molecular compound

• Ionic compound

• Metallic compound

Which group on the periodic table does potassium belong to?

• Group 4

• Group 1

• Group 3

• Group 2

What is the charge of the potassium ion in KOH?

• +2

• +1

• -1

• 0

What is the charge of the hydroxide ion in KOH?

• 0

• -1

• +1

• +2

What happens to KOH when it is dissolved in water?

• It evaporates

• It remains unchanged

• It dissociates into ions

• It forms a precipitate

Which ions are formed when KOH dissociates in water?

• Hydrogen ion and hydroxide ion

• Potassium ion and chloride ion

• Sodium ion and hydroxide ion

• Potassium ion and hydroxide ion