We have to determine the volume of 36.0 % by mass HCl solution required to prepare 4.95 L of a solution with a pH of 1.8.
Recall: halogen binary acids are strong acids, except HF.
HCl is a strong acid and dissociates completely in solution.
HCl → H+ + Cl-
We will solve this problem through these steps:
Step 1: Calculate the concentration of final solution using the given pH.
Step 2: Calculate the molarity of 36.0 % by mass HCl solution (stock solution).
Step 3: Use the dilution formula and calculate the required volume.
What volume of a concentrated HCl solution, which is 36.0% HCl by mass and has a density of 1.179 g/mL, should be used to make 4.95 L of an HCl solution with a pH of 1.8?