Final answer:
The pH of a 0.000100 M solution of HBr, a strong acid that dissociates completely in water, is calculated using the formula pH = -log[H+], resulting in a pH of 4.
Step-by-step explanation:
The question asks what the pH of a 0.000100 M solution of HBr is. HBr is a strong acid, which means it dissociates completely in water.
Therefore, the concentration of H+ ions in the solution will be the same as the initial concentration of HBr. To find the pH, we use the formula:
pH = -log[H+]
So, for a 0.000100 M solution of HBr:
pH = -log(0.000100) = 4.
Thus, the pH of a 0.000100 M solution of HBr is 4.