The chemical formula for the hydrochloric acid is HCl. The concentration of H+ in the solution is also equal to the concentration of the compound.
concentration of H+ = 0.0075M
The pH is calculated through the equation,
pH = -log[H+]
where [H+] is the concentration.
Substituting the known values,
pH = -log(0.0075M) = 2.12
Thus, the pH of the given hydrochloric acid is 2.1. The answer is the third choice.
