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A sample of 0.0020 mole of HCl is dissolved in water to make a2000-mL solution. Calculate the molarity of the HCl solution,the [H3O+], and the pH. For a strong acid such as HCl, the[H3O+] is the same as the molarity of the HCl solutions.
HCl + H2O - - > H3O+ + Cl-

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