Final answer:
To find the pH of a fruit juice sample with a hydrogen ion concentration of 2.87 x 10^-4 M, use the formula pH = -log[H+], yielding a pH value of 3.54.
Therefore, the pH of the fruit juice sample is 3.54, which means the correct answer is option 2) 3.54.
Step-by-step explanation:
The question asks for the calculation of the pH given a hydrogen ion concentration of 2.87 x 10-4 M in a fruit juice sample.
To calculate pH, use the formula:
pH = -log[H+]
Inserting the given hydrogen ion concentration into the formula, we get:
pH = -log(2.87 x 10-4)
Upon performing the calculation, the pH is found to be:
pH = 3.54
Therefore, the pH of the fruit juice sample is 3.54, which means the correct answer is option 2) 3.54.