Chemistry
Grade-10
Easy
Question
Identify the alkalis from the following.
- Zink hydroxide
- Copper hydroxide
- Potassium hydroxide
- Ammonia
Hint:
An alkali is as a base that dissolves in water.
The correct answer is: Potassium hydroxide
An alkali is a basic, ionic salt of an alkali metal or an alkaline earth metal. An alkali can also be defined as a base that dissolves in water. A solution of a soluble base has a pH greater than 7.0.
Potassium hydroxide is a water soluble base. Potassium hydroxide is an alkali.
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