Gravametric Quant Lab Report
Quantitative Analysis
Gravimetric Determination of Iron as Fe2O3
Laboratory Experiment 2
February 19, 2013
Abstract:
In the Gravimetric determination is the measurement of mass in two different forms precipitation and volatilization. In our experiment we will be using the precipitation form which isolates an ion in a solution by a precipitation reaction, filtering, purifying by wash method, conversion to product of known composition, and final weigh of the product comparing the mass difference of theorictal and actual. This method identified the weight percent of iron in an unknown sample. Three samples are taken to limit percent error. In the results of the three samples 1 had a percent of 10.764 Fe (III), sample 2 had a percent of 11.725 Fe (III), and sample 3 with a percent of 12.216 Fe (III). The average sample percent was 11.568 compared to given amount percent of 12.90. In theory with a loss of 1.332 this experiment was overall successful.
Introduction:
In this lab the purpose was to use the gravimetric determination procedure to identify the weight percent of iron in an unknown sample. Three samples were collected and analyzed. Iron can be analyzed by precipitating the hydrated iron oxide from a basic solution. After the basic solution is hydrated the process is then followed by complete dehydration to give solid iron oxide.
Methods and Materials: Needed in the experiment was; * Crucibles, Metal rings, Wire triangles, Burners, Funnels, Filter Paper, Beakers, Glass rod, Diluted ammonium hydroxide solution, Nitric acid solution, Silver nitrate solution, NH4NO3 solution, Distilled water.
Below are some methods used in experiment. fig.1 fig.2
Experimental Procedure:
This experiment was a multiple session lab.
Obtain three crucibles and desiccator. Bring the three porcelain crucibles and caps to constant mass by heating to redness for 15 minutes over a burner, use fig. 1 for method reference. Place the heated
Gravimetric Determination of Iron as Fe2O3
Laboratory Experiment 2
February 19, 2013
Abstract:
In the Gravimetric determination is the measurement of mass in two different forms precipitation and volatilization. In our experiment we will be using the precipitation form which isolates an ion in a solution by a precipitation reaction, filtering, purifying by wash method, conversion to product of known composition, and final weigh of the product comparing the mass difference of theorictal and actual. This method identified the weight percent of iron in an unknown sample. Three samples are taken to limit percent error. In the results of the three samples 1 had a percent of 10.764 Fe (III), sample 2 had a percent of 11.725 Fe (III), and sample 3 with a percent of 12.216 Fe (III). The average sample percent was 11.568 compared to given amount percent of 12.90. In theory with a loss of 1.332 this experiment was overall successful.
Introduction:
In this lab the purpose was to use the gravimetric determination procedure to identify the weight percent of iron in an unknown sample. Three samples were collected and analyzed. Iron can be analyzed by precipitating the hydrated iron oxide from a basic solution. After the basic solution is hydrated the process is then followed by complete dehydration to give solid iron oxide.
Methods and Materials: Needed in the experiment was; * Crucibles, Metal rings, Wire triangles, Burners, Funnels, Filter Paper, Beakers, Glass rod, Diluted ammonium hydroxide solution, Nitric acid solution, Silver nitrate solution, NH4NO3 solution, Distilled water.
Below are some methods used in experiment. fig.1 fig.2
Experimental Procedure:
This experiment was a multiple session lab.
Obtain three crucibles and desiccator. Bring the three porcelain crucibles and caps to constant mass by heating to redness for 15 minutes over a burner, use fig. 1 for method reference. Place the heated
References: Lewis, D. 2013. Quantitative Analysis Lab Journal. Gravimetric Determination of Iron as Fe2O3. Vol. 1: Pages 4 – 5. Franklin, J. 2013. Quantitative Analysis Lab Journal. Gravimetric Determination of Iron as Fe2O3. Vol. 1: Pages 7 - 11. Bb Learn. 2013. Quantitative Chemical Analysis. Gravimetric Determination of Iron Lab Handout.