Calculate the pH of that completely dissociates with water.
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Suppose you have a sample of 25.0 mL of 0.01M HCl solution. HCl is a strong acid and it completely dissociates in water. Calculate the pH of this solution (pH= -log[H3O+]).
CN- is the conjugate base to the weak acid HCN, with Ka= 6.0x10-10, pKa = 9.22.
Given a 50mL of a 0.1 M of NaCN (which dissociates completely), how many mL of 1.0 HCl should be added to the solution in order to bring the pH to 9.22?