Question

When MgO is dissolved in water, Mg(OH)2 is obtained. The solution thus obtained is ___ in nature.

Answer 1

Answer:

Explanation:

For example: magnesium reacts with oxygen to form magnesium oxide. The reaction involved is: 2Mg(s)+O2(g)→2MgO(s) The metal oxide form alkali solution when dissolved in water. This solution turns red litmus paper to blue. Hence, these metal oxides are basic in nature.

Answer 2

The solution obtained is basic.

• The reaction of metal oxide with water results in the production of basic oxide. The basic oxide releases hydroxyl ions and hence is basic.
• The reaction when magnesium oxide is dissolved in water will be as follows -
• MgO + H2O --> Mg(OH)2. In the mentioned chemical reaction, MgO is magnesium oxide, H2O is water and Mg(OH)2 is magnesium hydroxide.
• The compound magnesium hydroxide will release hydroxyl ions and hence will be basic.