What is the pH of a solution that is 5.2x10-2 M of HI? (2 digits past decimal)

To find the pH of a solution, we first need to understand that HI is a strong acid. This means it will dissociate completely in a solution. The concentration of H+ ions will be the same as the concentration of the HI.

1. Write the dissociation equation: HI -> H+ + I-
2. Since HI is a strong acid, it will dissociate completely. So, the concentration of H+ ions ([H+]) will be the same as the concentration of HI, which is 5.2x10^-2 M.
3. The pH of a solution is calculated using the formula: pH = -log[H+].
4. Substitute the given [H+] into the formula: pH = -log(5.2x10^-2).
5. Calculate the pH using a calculator. The pH of the solution is approximately 1.28.