LAB: #3
DATE: 25th September, 2007
TITLE: Analyzing Iron Tablets
OBJECTIVE: To determine the content of iron in iron tablets by titration.
MATERIALS:
- goggles and lab coat
- 2 125cm3 conical flask
- 1 250cm3 standard volumetric flask
- 1 50cm3 burette
- safety filler and pipette
- 1 stand and clamp
- filter funnel
- Bunsen burner kit
Chemicals
- Iron tablets
- 1.0moldm-3 sulphuric acid (200cm3)
- 0.01moldm-3 Potassium Per Manganate
- Distilled water/ wash bottles
- soap solution
PROCEDURES:
Making a solution of the tablets
- 5 iron tablets were weighed accurately, and then dissolved in about 100cm3 of 1.0 moldm-3 sulphuric acid in a conical flask. Some heating was required, but not more than the necessary needed to dissolve the tablets.
- The mixture was filtered into a beaker, making sure that no solution was lost, then the conical flask was washed out with water and the washings were poured through the filter.
- Finally, distilled water was poured over the residue and these washings we collected as well. The filtrate was then poured into a 250cm3 standard volumetric flask, washing out the beaker and adding washings to the standard flask. The mark was made up using distilled water.