Final answer:
The [H+] for an acidic solution with a pH of 6.115 is 7.76 x 10⁻⁷ M, which is calculated using the formula [H+] = 10^-pH.
Step-by-step explanation:
To determine the concentration of hydrogen ions [H+] from a pH value, we use the mathematical relationship that links [H+] and pH:
pH = -log[H+]
The given pH of an acidic solution is 6.115. To find the [H+], we rearrange the formula to solve for [H+]:
[H+] = 10-pH
[H+] = 10-6.115
Therefore, the concentration of hydrogen ions [H+] is 7.76 x 10⁻⁷ M.
An important note is that a pH less than 7 indicates that the solution is acidic, and the pH value corresponds inversely to the concentration of hydrogen ions.