If the apparent hydrogen ion concentration is 1X10 -8 moles per liter, what is the pH of that solution?

To determine the pH of a solution, we use the formula pH = -log[H⁺], where [H⁺] is the concentration of hydrogen ions in moles per liter. In this case, the apparent hydrogen ion concentration is given as 1 x 10⁻⁸ moles per liter.

Calculating the pH involves taking the negative logarithm of the hydrogen ion concentration:

pH = -log(1 x 10⁻⁸)

Using logarithmic properties, particularly that log(1 x 10⁻⁸) = -8, we find:

pH = -(-8) = 8.

Therefore, the pH of the solution is 8, indicating that it is slightly basic. This value falls within the pH scale, which ranges from 0 (very acidic) to 14 (very basic), with 7 being neutral. Hence, the correct answer reflects this calculation and understanding of how pH is determined from hydrogen ion concentration.