Chemistry Lab write up - Chemistry 112 Formal Lab Report Write Up Amount of Phosphate in Liquid Jonas Taylor Haven Arnzen Jonathan Cox Background There

Chemistry Lab write up - Chemistry 112 Formal Lab Report...

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Chemistry 112 Formal Lab Report Write Up Amount of Phosphate in Liquid Jonas Taylor Haven Arnzen Jonathan Cox
Background There is a water degradation process called, “Eutrophication.” This is when levels of nutrients rise and cause an increase of microscopic algae. This makes it hard for aquatic plants to receive the sunlight they need. Phosphate is in many commercial items including soda and fertilizer. Usually there is a need for phosphorous, which is why companies put it in their fertilizer. Sometimes if fertilizer is mixed with animal manure it results in a surplus of phosphorous in the environment and negatively impacts it. [Myl14] In this lab, we figured out the concentration of phosphate in a soda and in a water sample. We use the Dilution equation which is: M 1 V 1 =M 2 V 2 (eq. 1) Where M 1 is Molarity of solution one, M 2 is Molarity of solution two, V 1 is Volume in liters of solution one, and V 2 is liters of solution two. We used this equation to determine how many milliliters were required to make our five phosphate solutions. Procedure We used a volumetric pipette to get measure 2 mL of .1 Molar phosphate solution and mixed it with 198 mL of water to get a .001 Molar solution. We set up 5 volumetric flasks so we could make 5 different phosphate solutions. We used our .001 Molar phosphate solution to prepare 100 mL each of five standard solutions. To get a 2.00x10 -5 we added 2 mL of .001 Molar solution with 98 mL of water. To get a 5.00x10 -5 we added 5 mL of .001 phosphate solution and 95 mL of water. To get the 1.00x10 -4 we added 10 mL of .001 phosphate solution and 90 ml of water. To get a 2.00x10 -4 we added 20 mL of .001 phosphate solution and 80 mL of water. Finally, to get a 5.00x10

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