Question

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Basic oxide dissolve in water turns red litmus blue. Give reason. ​​

Answer 1

Magnesium oxide is basic in nature and when it is dissolved in water or brought near moisture, it starts showing up its basic properties because of the ions. And when the solution is tested, it turns red litmus blue as a result of its basic nature.

Answer 2

CO2 +H2O⟶H2 CO3

GOOD MORNING

Carbon dioxide, when it dissolves in water, it will form carbonic acid. This lowers the pH and turns the blue litmus paper red.