0.119As observed from the data, there is an observed inconsistency in the V1vs V2between the three trials. This is may be because of some errors committed during the experiment. One error is the retention of CO2in both the boiled distilled water and during methyl orange titration. Carbonate error may have been committed and may have caused a decrease in the correct volume of HCl to be used. Another error to be considered is either over or under titration especially using the methyl orange indicator since the color changes are hard to distinguish. Under titration would cause a calculated %composition to be lower and over titration would cause an increase in the calculated %composition.During the experiment, a lot of base solutions were formed and are transferred to glass containers. These solutions, however, should not be kept inside glass containers for a long time because it tends to etch glassware.5REFERENCES
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 College of Engineering, University Of Massachusetts Amherst. CHAPTER XVI. VOLUMETRIC METHODS. ses/572/572bk16/572BK16.html(accessed: Jan. 15, 2014) The Chemistry Hypermedia Project. Analytical Standards. -ed/data/standard.html(accessed: Jan. 15, 2014) Indiana University Southeast. Standardization of a Base, NaOH Class Notes. ek11.htm(accessed: Jan. 15, 2014) Seely, O. and de la Camp, U. California State University Dominguez Hills. Determination of the Carbonate of a Soda-Ash Sample. al/carbnate.htm(accessed: Jan. 15, 2014) Department of Chemistry, University of Rochester. The Grasshopper’s Guide to Cleaning Glassware. glassware.html(accessed: Jan. 15, 2014)
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