A 25.0 mL sample of 0.120 M monoprotic acid HX ( ) is titrated with 0.180 M Ba(OH)
CHEMISTRY · Multi-part · A Level · Chemistry · Acids and bases · Acids and bases
Problem
A 25.0 mL sample of 0.120 M monoprotic acid HX (Ka=3.5×10−6) is titrated with 0.180 M Ba(OH)2.
Respond thoroughly to each part.
(a) Write the balanced molecular equation for the reaction between HX and Ba(OH)2.
(b) Calculate the exact volume of 0.180 M Ba(OH)2 required to reach the equivalence point.
(c) Suppose that an additional 20.0 mL of the 0.180 M Ba(OH)2 is delivered beyond the equivalence point. Calculate the pH of the final solution.
(d) Provide a quantitative argument to justify neglecting any contribution of the conjugate base X− when you calculated the pH in part (c).