Suppose that you are performing a titration on a monoprotic acid. Titration of this monoprotic acid required a volume of 0.1L of the base being used. If the same volume of a diprotic acid would instead have been used (same volume of a diprotic acid versus the originally used monoprotic acid), and if we assume furthermore that the concentration of the diprotic acid and the monoprotic acids are equal, how does the volume of base required to reach the endpoint for the diprotic acid compare to the volume of base required to reach the endpoint for the monoprotic acid?
a) More base is likely required to reach the endpoint for the diprotic acid than for the monoprotic acid under these conditions
b) Less base is likely required to reach the endpoint for the diprotic acid than for the monoprotic acid.
c) Exactly the same amount of base is required for both monoprotic and diprotic acids under the situations described here.
d) A completely different indicator will need to be used here.
b) Less base is likely required to reach the endpoint for the diprotic acid than for the monoprotic acid.
Since the diprotic acid has two acidic hydrogen atoms that can be neutralized by the base, it is able to react with the base more effectively compared to the monoprotic acid, which only has one acidic hydrogen atom. As a result, less base is likely required to reach the endpoint for the diprotic acid compared to the monoprotic acid when both have equal concentrations.