Question

All alkalies are bases but all bases are not alkalies. Justify this statement.
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Answer 1

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Bases may either be soluble or insoluble in water. Therefore, all alkalis are bases because they will all neutralize acids, but not all bases are alkalis because not all bases will dissolve in water. An example of an alkali is sodium hydroxide.

Answer 2

Bases may soluble or insoluble in water. Therefore, all alkalis are bases because they will all neutralize acids, but not all bases are alkalis because not all bases will dissolve in water.

(Alkalis are bases which are completely soluble in water.Alkalis dissolve in water to form soluble bases sodium hydroxide and potassium hydroxide respectively).