Final answer:
To find the [H+] concentration in a basic solution with a pH of 8.63, we calculate [H3O+] = 10^-8.63, which equals 2.34 × 10^-9M, confirming it is a basic solution.
Step-by-step explanation:
To calculate the concentration of hydrogen ions ([H+]) in a basic solution with a pH of 8.63, we use the relationship between pH and [H3O+] concentration, which is defined as pH = -log([H3O+]). The provided information states that basic solutions have an [H3O+] concentration lower than 1.0 × 10^-7M. Given the pH of 8.63, we can calculate the hydrogen ion concentration as follows:
pH = -log([H3O+])
8.63 = -log([H3O+])
To find [H3O+], we need to take the inverse logarithm (antilog) of the negative pH:
[H3O+] = 10^-8.63 = 2.34 × 10^-9 M
Therefore, the [H+] concentration of a solution with a pH of 8.63 is 2.34 × 10^-9M, indicating it is indeed a basic solution.