Objectives: i. To determine the mole ratio of iron : 1,10-phenanthroline (phen) complex using the method of continuous variation and the mole ratio method. Results: (Please attach all graphs) A. Method of Continuous Variation Mole Fraction of Fe2+ Absorbance Volume of Fe2+ Solution, mL 0 Volume of (phen), mL 10 1 9 0.030 0.129 0.260 0.236 0.202 2 0 1/10 201 9/10 - 0:2 3/10 - 03 4/10 10.4 5/10 -0.5 8 3 7 4 6 0.167 5 5 0.133 6 4 6/10 =0-6 7 3 0 1 8 2 1/10 8/60 9/10 0.8 0.086 0.049 0.026 0.013 9 1 0.9 10 0 10100 1-6 1 No. of moles of Fe in the solution Mole Fraction of Fe = No. of moles of Fe + no. of moles of (phen) Plot graph absorbance against the mole fraction of Fe2+using MS EXCEL. What is the stoichiometry of the complexation reaction between Fe2+ and 1,10- phenanthroline? B. Mole Ratio Method Volume of Fe? Solution, mL 4 Absorbance Volume of (phen), mL Mole Ratio (phen) Fe No. of Moles No. of Moles of Fe2+ of (phen) 1 4 3 4 6 4 8 0.038 0113 0.166 0.224 0.285 0.389 0.454 0.437 0.367 4 10 4 12 4 14 4 17 4 20 Mole ratio (phen):Fe No. of moles of (phen) No. of moles of Fe Plot graph absorbance against the mole ratio (phen):Fe using MS EXCEL. What is the stoichiometry of the complexation formed