5. A student performs a series of titrations in order to standardize a solution of hydroiodic acid.

They complete the following data table.

Titration of 25.0 mL of hydroiodic acid with 0.225 mol/L sodium hydroxide

Trial #

Initial Burette Volume (mL)

Final Burette Volume (mL)

1

0.20

21.52

2

21.52

41.10

3

1.50

20.94

4

20.94

40.76

5

0.50

19.99

Based on their observations, what is the concentration (in mol/L) of the hydroiodic acid

solution?

(5 marks)