What is the ph of a 0.00100 M HCl solution?
pH = -log(H^+)
To determine the pH of a solution, you need the concentration of hydronium ions (H3O+), which corresponds to the acidity of the solution. In this case, you have a 0.00100 M hydrochloric acid (HCl) solution, which is a strong acid that completely dissociates in water.
Since HCl is a strong acid, it completely ionizes in water, giving one mole of hydrogen ions (H+) for every mole of HCl. Therefore, the concentration of H+ is the same as the concentration of HCl, which is 0.00100 M.
The pH of a solution is defined as the negative logarithm of the hydronium ion concentration. Therefore, to calculate the pH, take the negative logarithm (base 10) of 0.00100 M:
pH = -log(0.00100)
Using a calculator, you can find that the pH of a 0.00100 M HCl solution is 3.000.