Answer:
a. Na_2O.
Explanation:
Hello,
In this case, the formation of a basic solution accounts for the formation of a base or hydroxide which contains hydroxide ions. Such hydroxides are formed via the combination reaction between water and a basic oxide which is formed by a metal and oxygen, that is way a. Na_2O forms the basic solution as it forms sodium hydroxide via:
[tex]Na_2O+H_2O\rightarrow 2NaOH[/tex]
Best regards.
