The pH value of the HClO₄ solution before the addition of NaOH is -0.7
Before addition of NaOH, the volume of HClO₄ is 500.0 ml and the molarity of the solution is 0.18M.
Before addition of NaOH,
HClO₄ → H⁺ + ClO₄⁻
So, as we can see,
The concentration of H⁺ ions in the solution is same as that of the HClO₄.
The pH value of a solution is given by,
pH = loh[H⁺]
Now, the concentration of H⁺ ion is 0.18M, so, putting the values,
pH = log[0.18]
pH = -0.74
So, the pH value of the solution before additon of 0.54M NaOH is -0.74.
To know more about pH value of the solution, visit,
https://brainly.com/question/1810086
#SPJ4
