find the hydrogen ion concentration if the the pH equals 3.4

Question

The pH of a solution ranges from 0 to 14. An acid has a pH less than 7. Pure water is neutral and has a pH of 7. The pH of a solution is given by pH equals negative log xpH=−logx where x represents the concentration of the hydrogen ions in the solution in moles per liter. Find the hydrogen ion concentration if the pH equals 3.4 

Answer 1

[H₃O⁺] = 10^-pH = 10^-3.4 ≅ 3.981 x 10^-4 moles/liter