A 25 mL aliquot of an HCl solution is titrated with 0.100 M
NaOH. The equivalence point is reached after 21.27 mL of the base
were added. Calculate 1) the concentration of the acid in the
original solution, 2) the pH of the original HCl solution and the
original NaOH solution, 3) the pH after 10.00 mL of NaOH have been
added, 4) the pH at the equivalence point, and 5) the pH after
25.00 mL of NaOH have been...