Question

write balanced equation for the reaction that takes place when sodium oxide reacts with water . how will this solution behave towards phenolphthalein and red litmus paper?

Answer 1

Hi !

Sodium oxide = Na₂O 

Sodium Oxide is a metal oxide.Hence,it is basic in nature.

When it reacts with water,it forms an alkali(base) NaOH(sodium hydroxide)

Na₂O + H₂O ----> NaOH

NaOH turns  phenolphthalein pink and turns red litmus paper to blue.

Answer 2

The balanced equation for the reaction that takes place when sodium oxide reacts with water,is as follows -

• Chemical equation :

Na2O + H2O = 2NaOH

• Now, the final solution will turn the colour of the phenolphthalein into pink and the colour of the red litmus paper will become blue.

• This happens, because the final solution is basic in nature due to the presence of NaOH. Now,phenolphthalein becomes pink and litmus paper becomes blue,in the basic solution.