The goal of the lab was to identify an unlabeled compound found in the chemistry stockroom to be able to dispose of it properly. This lab demonstrated the process of identifying an unknown compound as well as synthesizing the compound. Identifying the compound consisted of performing various tests to detect the chemical and physical properties of the compound and comparing it to the list of possible compounds. The tests conducted were the solubility test which the compound fully dissolved in water, the flame test which had no discoloration when held in the flame, cation and anion tests which showed the existence of some halides like Cl, Br, and I, pH test in which the compound had a pH of 6, and the conductivity test which had an average value
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The objective was to identify this compound, so it could be disposed of properly. Identifying the compound consisted of testing different physical and chemical properties and comparing the results to known compounds. Proper disposal of chemicals is important and for a chemical to be properly disposed of it must be identified. Proper disposal is important because of the potential hazards on the surrounding area. Hazards like toxins that could cause harm to objects or living people in the area. The article from 2005 from the CDC illustrates the effects of improper disposal. Case reports including an event in June 2004 where improper disposal of hydrochloric acid released 10 gallons of the hazardous substance into a residential area.1 Previous research was done by the National Research Council written in a book titled Prudent Practices in the Laboratory. Chapter 8 goes over management of waste and its importance. Additionally, it goes over different techniques used to identify chemicals for proper disposal. For treatment and disposal facilities to handle unknown materials they must collect a list of different information to help identify it. Information like physical description, water reactivity, water solubility, pH, flammability, radioactivity, toxins, etc.2 The objective was to identify and synthesis the unknown compound. This lab consisted of identifying the compound by testing …show more content…
The solubility test involved usage of a 40mL beaker and stir rod. Mixed 0.15g of the unknown chemical into 10mL of deionized water and recorded if the compound is soluble. The flame test used a Bunsen burner and nichrome wire. Using the solution created from solubility test, dip the nichrome wire into the solution and hold over the flame. Recorded any change in the flames color. Testing for the cation ammonium used two 10mL graduated cylinders and a 50mL burette. Added 1mL of 6M NaOH to 1mL of unknown solution created in the solubility test. Smelled vapor and recorded any smell of ammonia. Testing for halides involved using three 10mL graduated cylinder and one 50mL burette. Added 1mL of 6M HNO_3 and 1mL of 0.1M AgNO_3 to 1mL of solution created from solubility test and recorded any white precipitates. Testing for sulfate uses three 10mL graduated cylinders and one 50mL burette. Added 1mL of 6M HCl and 1mL of 0.1M BaCl_2 solution to 1mL of the unknown solution created from the solubility test. pH tests used a 40mL beaker with 15mL of water mixed with 0.2g of unknown compound. Dipped a pH strip into the solution and recorded the color of the paper. Conductivity test required use of a conductivity probe and a laptop with LoggerPro. Placed the probe in unknown solution created from the solubility test. Pressed collect and recorded the average
The objective was to identify this compound, so it could be disposed of properly. Identifying the compound consisted of testing different physical and chemical properties and comparing the results to known compounds. Proper disposal of chemicals is important and for a chemical to be properly disposed of it must be identified. Proper disposal is important because of the potential hazards on the surrounding area. Hazards like toxins that could cause harm to objects or living people in the area. The article from 2005 from the CDC illustrates the effects of improper disposal. Case reports including an event in June 2004 where improper disposal of hydrochloric acid released 10 gallons of the hazardous substance into a residential area.1 Previous research was done by the National Research Council written in a book titled Prudent Practices in the Laboratory. Chapter 8 goes over management of waste and its importance. Additionally, it goes over different techniques used to identify chemicals for proper disposal. For treatment and disposal facilities to handle unknown materials they must collect a list of different information to help identify it. Information like physical description, water reactivity, water solubility, pH, flammability, radioactivity, toxins, etc.2 The objective was to identify and synthesis the unknown compound. This lab consisted of identifying the compound by testing …show more content…
The solubility test involved usage of a 40mL beaker and stir rod. Mixed 0.15g of the unknown chemical into 10mL of deionized water and recorded if the compound is soluble. The flame test used a Bunsen burner and nichrome wire. Using the solution created from solubility test, dip the nichrome wire into the solution and hold over the flame. Recorded any change in the flames color. Testing for the cation ammonium used two 10mL graduated cylinders and a 50mL burette. Added 1mL of 6M NaOH to 1mL of unknown solution created in the solubility test. Smelled vapor and recorded any smell of ammonia. Testing for halides involved using three 10mL graduated cylinder and one 50mL burette. Added 1mL of 6M HNO_3 and 1mL of 0.1M AgNO_3 to 1mL of solution created from solubility test and recorded any white precipitates. Testing for sulfate uses three 10mL graduated cylinders and one 50mL burette. Added 1mL of 6M HCl and 1mL of 0.1M BaCl_2 solution to 1mL of the unknown solution created from the solubility test. pH tests used a 40mL beaker with 15mL of water mixed with 0.2g of unknown compound. Dipped a pH strip into the solution and recorded the color of the paper. Conductivity test required use of a conductivity probe and a laptop with LoggerPro. Placed the probe in unknown solution created from the solubility test. Pressed collect and recorded the average