Find the pH of Na₂SO₄:

• A) 7
• B) > 7
• C) < 7
• D) Data insufficient.

To determine the pH of sodium sulfate (Na₂SO₄), we need to consider its properties in solution. Sodium sulfate is a salt formed from a strong acid (sulfuric acid) and a strong base (sodium hydroxide). When dissolved in water, it dissociates into sodium ions (Na⁺) and sulfate ions (SO₄²⁻).

Understanding the pH of Na₂SO₄

Since both the sodium ion and the sulfate ion do not significantly affect the pH of the solution, Na₂SO₄ is considered a neutral salt. Therefore, the pH of a solution of sodium sulfate is typically around 7.

Answer Options

• A) 7
• B) > 7
• C) < 7
• D) Data insufficient

Given this information, the correct answer is A) 7.