Answer:
The answer to your question is pH = 8.5
Explanation:
Data
pH = ?
[H₃O⁺] = 3.0 x 10⁻⁹ M
Formula
pH = -log [H₃O⁺]
-Substitution
pH = -log [3.0 x 10⁻⁹]
-Simplification
pH = -(-8.523)
-Result
pH = 8.523
-Conclusion
pH of a solution with a [H₃O⁺] of 3.0 x 10⁻⁹ is 8.5, then it is an alkaline solution.
