The Concentration Of The Wastewater

1586 Words Feb 23rd, 2016 7 Pages
where M1 is the molarity (concentration) of the wastewater, V1 is the amount of titrant used to reach a neutral pH, M2 is the concentration of the titrant used, and V2 is the total amount of titrant used as calculated in Figure 1. As Table 8 shows, the calculations were consistent with the qualitative analysis of concentration formerly explained. For example, the olive oil had the most concentrated wastewater at 10.25 M while detergent I and vegetable oil had the least concentrated waste water at 2.5 M and 3.6 M, respectively.
Just like all the other results, these titration analyses could be due to the improper formation of soap due to a lack of heating again, as previously explained. Then, there was detergent II which started with an acidic pH of 2 and therefore required sodium hydroxide to neutralize it. Detergent II’s wastewater was highly concentrated because it required over two times the amount of neutralizer needed in crisco, lard, and vegetable oil’s titrations as seen in Table 8 and Figure 7; it used almost 6 mL of titrant to neutralize the reaction when only about 2 mL of titrant was used for the others. The calculated concentration of detergent II was also high with a molarity of 10.8.
During the titration portion of the experiment, there was another mistake that was a source of error in the results. In the calculations of the initial concentration of the wastewater of each substance, the molarities seem to be relatively high. This is because the concentration…
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