Chapter 14, Problem 47E

Four solutions of unknown HCl concentration are titrated with solutions of NaOH. The following table lists the volume of each unknown HCl solution, the volume of NaOH solution required to reach the equivalence point, and the concentration of each NaOH solution. Calculate the concentration (in M) of the unknown HCl solution in each case.

HCl Volume (mL)	NaOH Volume (mL)	[NaOH] (M)
a. 25.00 mL	28.44mL	0.1231 M
b. 15.00 mL	21.22 mL	0.0972 M
c. 20.00 mL	14.88 mL	0.1178 M
d. 5.00 mL	6.88 mL	0.1325 M