Answer to Question #66857 in General Chemistry for karla

Question

What is the pH of a solution of HCl in which
[H+] = 0.043 M?

Answer 1

HCl is strong acid (electrolyte), so dissociation process is
HCl → H+ + Cl-
That’s why the pH value for strong acids we can calculate, using formulae:
pH = - lg [H+], where [H+] is molar concentration of hydrogen ions.
Thus, pH value equals:
pH = - lg 0.043 = 1.37