Chem 6 Lab
Lab 6: Data Analysis
Coordination Chemistry – Part 3 – Acid/Base Titration
Name: _______________________________________________
TA and Lab Section: __________________________________
Total: 35 points
Titration of Cobalt Complex
(10 pts)
1. Attach your titration curve.
(1 pt)
2. Concentration of standard base:
__________________________
(4 pts)
3. Volume of titrant at equivalence (end) point:
Volume of titrant at half-equivalence point
__________________________
_________________________
(2 pts)
4. pH at half-equivalence point (pKa):
__________________________
(3 pts)
5. Experimental value of Ka:
__________________________
(2 pt)
6. Mass of sample titrated:
__________________________
(10 pts)
7. Determined molar mass:
Show molar mass calculation:
(3 pts)
__________________________
8. Determine the average molar mass for your class data and standard deviation of
this molar mass.