Step-by-step explanation
Given
Concentration of HCl = 8.75x10^-5 M
Required: The pH of HCl
Solution
pH = -log[H+]
pH = -log[8.75x10^-5]
pH = 4.06
The pH is less than 7, which means the solution is acidic.
Answer
pH of HCl = 4.06
The solution is acidic