Final answer:
The examples provided don't directly answer the question, as they relate to different scenarios involving acetic acid and not the simple dilution by water that was asked about. Therefore, we cannot calculate the pH for the student's specific question of the diluted acetic acid solution.
Step-by-step explanation:
The student is asking about the pH calculation of a diluted acetic acid solution upon mixing it with water. To solve this, we utilize the known concentration of the acetic acid and its dissociation constant (Ka) to find the concentration of the hydrogen ions ([H+]), and then use the pH formula pH = -log([H+]).
However, the information provided suggests this task relates to a buffer solution or the effect of adding strong bases to weak acids, which isn't directly applicable to the question of diluting acetic acid in water. As such, we can't calculate the pH using the provided examples, as they discuss the pH of different scenarios that don't match the conditions specified in the student's question. The examples given are about acetate buffer solutions, pH after adding NaOH, and the pH of different concentrations of acetic acid, not a simple dilution.