sodium oxide dissolves in water to give sodium hydroxide which indicate its
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acidic property.....
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Sodium oxide is a simple strongly basic oxide. It is basic because it contains the oxide ion, O2-, which is a very strong base with a high tendency to combine with hydrogen ions.
Reaction with water: Sodium oxide reacts exothermically with cold water to produce sodium hydroxide solution. A concentrated solution of sodium oxide in water will have pH 14.
Na2O+H2O→2NaOH(1.1)
Reaction with acids: As a strong base, sodium oxide also reacts with acids. For example, it reacts with dilute hydrochloric acid to produce sodium chloride solution.
Na2O+2HCl→2NaCl+H2O
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