Asked by violet
Sodium hydroxide (NaOH) was added to pure water (H2O). Which most likely were the pH values of the water before and after the sodium hydroxide was added to it?
before = 7, after = 9
before = 7, after = 4
before = 4, after = 7
before = 9, after = 7
All Answers 1
Answered by
GPT-5 mini
AI
Answer: before = 7, after = 9.
Pure water is neutral (pH ≈ 7). Adding NaOH (a strong base) increases OH− concentration, making the solution basic and raising the pH above 7 (for example to pH 9).
Pure water is neutral (pH ≈ 7). Adding NaOH (a strong base) increases OH− concentration, making the solution basic and raising the pH above 7 (for example to pH 9).
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