A. Acetic is added to the solution, and the pH of the solution becomes lower.
B. Distilled water is added to the solution, and the pH of the solution does not change.
C. Sodium hydroxide, a base, is added to the solution, but the pH of the solution does not change.
D. Formic acid is added to the solution, and the pH of the solution becomes higher.
4 Answers
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C. Sodium hydroxide, a base, is added to the solution, but the pH of the solution does not change.
Buffer is a solution that maintains its pH in specific range after acid or base adding.
Answer B is not right cause water doesn’t change pH of solution due to its law dissociation rate. So, even solution that is not a buffer doesn’t change pH after water adding.
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C. Sodium hydroxide, a base, is added to the solution, but the pH of the solution does not change.
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It is ACETIC ACID. It is added to the solution, but the pH of the solution does not change.
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It would be Citric acid
