Final answer:
The pH of a 0.075M solution of perchloric acid is 1.12.
Step-by-step explanation:
The pH of a solution can be calculated using the formula pH = -log[H3O+]. In this case, the concentration of perchloric acid (HClO₄) is given as 0.075M. So, the concentration of hydronium ions, [H3O+], is equal to 0.075M. Using the formula, we can calculate the pH as follows:
pH = -log(0.075) = 1.12.