We are asked to calculate the pH of a 0.10 M HCl solution.
Remember that HCl is a strong, monoprotic oxyacid. It’s a strong oxyacid since there are 3 more O than H in the formula.
Recall that strong acids completely dissociate in water and that acids donate H+ to the base (water in this case). The dissociation of HClO4 is as follows:
HCl(aq) + H2O(l) → H3O+(aq) + Cl–(aq)
What is the pH of a 0.10 M HCl solution?