Question

mention the metallic oxides that dissolve in water to form alkalies . Write equation for it.​

Answer 1

• Sodium oxide ($Na_{2}O$) , potassium oxide ($K_{2} O$) are metal oxides which are water soluble.

• Metal oxides sodium oxide and potassium oxide dissolve in water to form alkalis.

Answer 2

Answer:

The metallic oxides that dissolve in water to form alkalies are the oxides of Na and K.

Explanation:

The normal oxides of alkali metals are basic. They are highly soluble in water and form highly alkaline solutions due to the formation of hydroxides.

Alkali is formed when the oxides of active metals such as sodium and potassium dissolve in water.

Na₂O + H₂O → 2NaOH

Because of its more alkaline composition, NaOH solution turns red lithmus paper to blue.

Similarly, potassium oxide dissolves in water and forms potassium hydroxide.

As a result, the oxides of sodium and potassium dissolve in water forming alkalies.

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