The pH of a solution of hydrochloric acid is 1.67. What is the molarity of the acid?

Answer in units of mol/L

1 answer

HCl is a strong acid, so it is 100 percent ionized.

pH=-log[H] but molarity is [H] because it is totally ionized, to
1.67=-log M

taking the antilog of each side

10^-1.67=M

M= 0.0234 moles/liter check the math.