Synthesis and Analysis of an Iron Compound

Name: Austin Cao

Partner: Zach

Date: October 1, 2009

Experiment 15: Synthesis and Analysis of a Compound of Iron

Introduction

In this experiment, we will synthesize a compound of iron, oxalate, potassium, and water and determine theoretical, actual, and percent yield for the synthesis. We will examine the components of the compound and determine the empirical formula.

Reference

Towson University Department of Chemistry, Laboratory Experiments in General Chemistry, Chem 110 and Chem 111, Version 8.0, 2007, pp. 103-116.

Data and Observations

Table 1. Measuring the Absorbance of Iron Solutions

Concentration of stock standard iron solution: 0.05023 mg/ml

Amount of unknown sample used in the solution: 0.128 grams

Absorbance of unknown solution: 0.220

Table 2. Titration of the Na2C2O4 Solution

Table 3. Titration of the Unknown Iron Solution.

Calculations

Part B:

Concentration of iron in each solution: [Concentration of stock standard solution (mg Fe/mL) x volume of each stock standard iron solution] / final volume after dilution (50mL)

Absorbance of the unknown = 198.2(concentration of the unknown) + 0.0154

Mass of Fe in the unknown sample = ((.00281 mg/mL x 50 mL) / 1 mL) ...