Example In I liter pure water add 0.01 mol of hydrochloric acid. Calculate this solution's pH change value. And in I liter contain 0.1 mol acetic acid and 0. 1 acetate ion mixture solution add 0.0lmol of hydrochloric acid. Calculate this solutions pH change value Notice: Square bracket will instead of equilibrium concentration in following time. Such as [H] instead hydrogen ion equilibrium concentrationExample: In 1 liter pure water add 0.01 mol of hydrochloric acid. Calculate this solution’s pH change value. And in 1 liter contain 0.1 mol acetic acid and 0.1 acetate ion mixture solution add 0.01mol of hydrochloric acid. Calculate this solution’s pH change value. Notice: Square bracket will instead of equilibrium concentration in following time. Such as [H+ ] instead hydrogen ion equilibrium concentration