Question

In the given reaction, the oxide of sodium is Na\(_2\)O + H\(_2\)O \(\rightarrow\) 2NaOH

• A. acidic
• B. basic
• C. amphoteric
• D. neutral

Hint:

Basic oxides form bases with water; acidic oxides form acids.

Answer 1

The Correct Option is B

The given reaction is:

Na₂O + H₂O → 2NaOH

To determine the nature of the oxide of sodium (Na₂O), we need to consider the properties of the product formed in the reaction.

1. In this reaction, sodium oxide (Na₂O) reacts with water (H₂O) to produce sodium hydroxide (NaOH).
2. Sodium hydroxide (NaOH) is a strong base, meaning it increases the hydroxide ion (OH^-) concentration when dissolved in water, indicating basic properties.
3. When an oxide reacts with water to form a basic solution, the oxide is classified as a basic oxide.

Thus, based on the reaction and the properties of the product (NaOH), the oxide of sodium (Na₂O) is basic.

To further justify this, let's consider each option in detail:

1. Acidic: Acidic oxides typically react with bases to form salts and water. Since Na₂O forms a basic solution, it does not fit this category.
2. Basic: As explained, the formation of a strong base (NaOH) indicates that Na₂O is a basic oxide, which is the correct classification.
3. Amphoteric: Amphoteric oxides can act as both acids and bases. Since Na₂O only shows basic characteristics, it is not amphoteric.
4. Neutral: Neutral oxides typically do not react with acids or bases to form salts or alter the pH of a solution (e.g., CO). Na₂O is reactive and forms a basic solution, ruling out this option.

Therefore, the correct answer is that the oxide of sodium is basic.