Calculate the pH of the Buffer Solution
What is the pH of a 1.41 L buffer solution consisting of 0.149 M butanoic acid and 0.288 M sodium butanoate after the addition of 0.061 moles of NaOH?
Is the addition of NaOH significant in changing the pH of the solution?
Answer:
pH = 5.31
Hello there!
Let's dive into calculating the pH of the buffer solution with the given components and the addition of NaOH. The initial pH of the solution with 0.149 M butanoic acid and 0.288 M sodium butanoate is 5.10.
After adding 0.061 moles of NaOH, the new concentrations of butanoic acid and sodium butanoate are 0.106 M and 0.331 M, respectively. This results in a new pH of 5.31, indicating a slight increase of 0.21 in pH.
Therefore, the addition of NaOH has a noticeable impact on the pH of the buffer solution, causing a slight shift towards a more basic environment.
Best regards!