Quantitative Determination of Sulfate by Gravimetric Analysis
Quantitative Determination of Sulphate by Gravimetric Analysis
Table of Contents: 1. Synopsis
2. Objective
3. Theory
3.1: Summary
3.2: Technique
3.3: Chemicals
3.4: Instruments
4. Procedures
4.1: Precipitation of BaSO₄
4.2: Washing and Filtration of BaSO₄ Precipitate
4.3: Drying and Weighing of BaSO₄ Precipitate
5. Results and Calculations
6. Discussions
7. Conclusion
8. References
1. Synopsis:
This report is written about determining the quantitative amount of sulphate inside barium sulphate, BaSO₄, using the method of gravimetric analysis. This quantitative determination is done by the addition of a dilute solution of barium chloride slowly to a hot unknown sulfate solution slightly acidified by concentrated hydrochloric acid, HCl. The white precipitate of barium sulphate is filtered off, washed with water, oven-dried, and weighed as barium sulphate. The quantitative amount of sulphate is deduced from mathematical calculations. The results of the experiment, however, did not yield positively, probably due to inadvertent human error over the course of the experiment. The percentage yield of sulphate inside barium sulphate attained from our results was not up to expectations. The percentage yield of sulphate was expected to be at least 90% and above, with >90% as a good percentage yield. Instead, we attained 54% percentage yield of sulphate.
2. Objective:
The purpose of the experiment is to determine the quantitative amount of sulphate inside barium sulphate using the method of gravimetric analysis.
3. Theory:
3.1 Summary:
Throughout the duration of the experiment, there are many procedures, techniques, chemicals, and instruments used to produce the results of the experiment.
There are a total of three simple sets of procedures required, in the gravimetric analysis method, in order to create the results of the experiment. The first procedure is the precipitation of BaSO₄, barium
Table of Contents: 1. Synopsis
2. Objective
3. Theory
3.1: Summary
3.2: Technique
3.3: Chemicals
3.4: Instruments
4. Procedures
4.1: Precipitation of BaSO₄
4.2: Washing and Filtration of BaSO₄ Precipitate
4.3: Drying and Weighing of BaSO₄ Precipitate
5. Results and Calculations
6. Discussions
7. Conclusion
8. References
1. Synopsis:
This report is written about determining the quantitative amount of sulphate inside barium sulphate, BaSO₄, using the method of gravimetric analysis. This quantitative determination is done by the addition of a dilute solution of barium chloride slowly to a hot unknown sulfate solution slightly acidified by concentrated hydrochloric acid, HCl. The white precipitate of barium sulphate is filtered off, washed with water, oven-dried, and weighed as barium sulphate. The quantitative amount of sulphate is deduced from mathematical calculations. The results of the experiment, however, did not yield positively, probably due to inadvertent human error over the course of the experiment. The percentage yield of sulphate inside barium sulphate attained from our results was not up to expectations. The percentage yield of sulphate was expected to be at least 90% and above, with >90% as a good percentage yield. Instead, we attained 54% percentage yield of sulphate.
2. Objective:
The purpose of the experiment is to determine the quantitative amount of sulphate inside barium sulphate using the method of gravimetric analysis.
3. Theory:
3.1 Summary:
Throughout the duration of the experiment, there are many procedures, techniques, chemicals, and instruments used to produce the results of the experiment.
There are a total of three simple sets of procedures required, in the gravimetric analysis method, in order to create the results of the experiment. The first procedure is the precipitation of BaSO₄, barium
References: 3. R.L. Watters, Jr, 1997, Gravimetry as a Primary Method of Measurement Available from: http://www.rminfo.nite.go.jp/common/pdfdata/4-002e.pdf