Problem: Consider the following curve for the titration of a weak base with a strong acid and answer each of the following questions.At what volume of added acid does pH = 14 – pKb?        

🤓 Based on our data, we think this question is relevant for Professor N/A's class at Ryerson University.

FREE Expert Solution

At 1/2 equivalence point: pH = pKa

pKa + pKb = 14

So we know that at 1/2 equivalence point:

pH = 14 – pKb

From the graph:

View Complete Written Solution
Problem Details

Consider the following curve for the titration of a weak base with a strong acid and answer each of the following questions.
The figure shows pH as a function of the volume of acid added. pH is measured from 0 to 14 on the x-axis and volume is measured from 0 to 50 milliliters on the x-axis. The curve starts at pH 12 at 0 milliliters. Then it decreases slowly to pH 10 at 23 milliliters added, then falls to pH 2 at 25 milliliters added. Then the curve decreases slowly again to pH 1 at 50 milliliters.

At what volume of added acid does pH = 14 – pKb?        

Learn this topic by watchingAcid and Base Titration Curves Concept Videos
All Chemistry Practice Problems Acid and Base Titration Curves Practice Problems
Q.A weak unknown monoprotic acid is titrated with a strong base. The titration curve is shown below.Find Ka for the unknown acid.
Q.Consider the following titration curves for two weak bases, both titrated with 0.100 M HCl.Which of the two bases has the larger Kb?
Q.A 0.229-g sample of an unknown monoprotic acid was titrated with 0.112 M NaOH and the resulting titration curve is shown in the figure.Determine pKa o...
Q.A 0.446-g sample of an unknown monoprotic acid was titrated with 0.105 M KOH and the resulting titration curve is shown in the figure.Determine pKa of...
See all problems in Acid and Base Titration Curves