The pH of a liquid is a measure of how acidic or basic it is. The concentration of hydrogen ions in a liquid is labeled [H+]. Use the formula pH = –log[H+] to find the pH level, to the nearest tenth, of a liquid with [H+] about 5.4 x 10–14.
Using the formula pH = –log[H+], we can plug in the given [H+] value:
pH = -log(5.4 x 10^-14)
pH = -log(5.4) + log(10^-14)
pH = -log(5.4) - 14
pH ≈ -0.732 - 14
pH ≈ -14.732
Therefore, the pH level of the liquid with [H+] about 5.4 x 10^-14 is approximately 14.7.