# Problem: Determine the pH of each solution.a solution that is 1.07% HCl by mass (Assume a density of 1.01  g / mL for the solution.)

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###### FREE Expert Solution

We're asked to determine the pH of a solution that is 1.07% HCl by mass.

Recall that the pH of a solution is given by:

Take note that:         [H+] = [H3O+]

Since HCl is a strong acid, it will completely dissociate into ions in solution as follows:

HCl(aq)   H+(aq) + Cl(aq)

This means that:  [HCl] = [H+]

**Brackets, [] indicate concentration in molarity

We first need to determine the molarity of HCl.

Recall that molarity (M) is given by:

Since we’re given the mass percent (% by mass) and the density of HCl solution, we can find the number of moles of HCl and the volume of the solution

Recall that mass percent is given by: ###### Problem Details

Determine the pH of each solution.

a solution that is 1.07% HCl by mass (Assume a density of 1.01  g / mL for the solution.)