[CHEM 1120] Lab#5:Analysis of an Iron-Containing Salt

Your Name LAB #5 : ANALYSIS OF AN IRON-CONTAINING
SALT (BEER’S LAW) Date the Lab was Done




DATA & MINOR CALCULATIONS:
Preparations of Standards

• Concentration of Fe2+ stock solution ___52.74 mg/L____
Preparation of K3Fe(C2O4)3 • 3H2O Test Solution

• Tared Mass of K3Fe(C2O4)3 • 3H2O ___0.205 g_______
• Empty Beaker ___51.485_______
• Empty Beaker + K3Fe(C2O4)3 • 3H2O ___51.690 g______




TABLE #1 : ABSORBANCE OF SOLUTIONS @ 490 nm
SOLUTION TYPE ABSORBANCE
1.00 mL 0.189 @ 490nm
2.00 mL 0.358 @ 490 nm
3.00 mL 0.485 @ 490 nm
4.00 mL 0.538 @ 490 nm
Unknown 0.295 @ 490 nm
Blank (no Fe2+) 0.000 nm