and Melting point. Introduction: - Infrared spectroscopy has also made a break though in medicine. It used to evaluate the kidney stone diseases thus broadening the use of IR in different ways. The purpose of this lab experiment is to identify the unknown solutions using the Infrared Spectroscopy (IR)‚ boiling point‚ and melting point (1). The IR helps to determine the compounds such as a functional group. In order to analyze the compound‚ IR and melting point work the best together. According to Pub
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Organic chemistry 201 | Mixed Melting Points | Determination of an Unknown Solid | | [Type the author name] | 9/15/2011 | Purpose : The main purpose of this experiment was to identify an unknown compound/substance by performing multiple experimental melting point tests. Pure and impure solids were tested to see what affect pureness/impureness had on a melting point. Background: The melting point of a solid can be used to determine the purity of the solid. Pure samples usually have
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Name: Bill Marano Due Date: 4-1-13 Experiment Title: TLC Analysis of Analgesic Drugs Purpose: The purpose of this experiment is to identify the brand name of an unknown commercial analgesic product by TLC analysis. Unknown #1 solution was run against standard solutions of individual analgesics. The components of the unknown product were identified by comparing characteristic traits‚ such as Rf‚ fluorescence and iodine staining‚ to those exhibited by the standards. The name of the commercial product
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experiment thin-layer chromatography (TLC) was used to determine the composition of an unknown mixture of analgesics given five references of AC‚ ASP‚ CAF‚ IBU‚ SAL‚ an unknown consisting of a mixture of three of the references‚ and two unknowns (6‚23) containing a single reference compound. The composition of the unknown mixture and two single unknowns were determined by spotting the reference compounds and the unknown compounds on two TLC plates. Placed them in a developing chamber that contained 0
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it takes to titrate a weighted sample of an unknown acid. Procedure: As outlined in instructions provided‚ no changes were made to the procedure. Data: Part A: Trial 1: Amount of H C O 2H O: 0.96 g Buret before titration: 3.6 mL Buret after titration: 32.5 mL Trial 2: Amount of H C O 2H O: 0.095 g Buret before titration: 3.0 mL Buret after titration: 31.9 mL Part B: Unknown acid # 310 Trial 1: Amount of unknown: 1.001 g Buret before titration: 1.4 mL
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CHEMISTRY EXPERIMENT NUMBER 8 PERCENTAGE OF WATER IN A HYDRATE Objectives 1. To determine the percentage of water in barium chloride dihydrate. 2. To determine the percentage of water in an unknown hydrate salt. 3. To calculate the water of crystallization for the unknown hydrate salt. Discussion A hydrate salt is composed of anions (negative ions) and cations (positive ions) which are surrounded by and weakly bonded water molecules. Each hydrate salt has a fixed number
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I. Title: Robinson Crusoe II. Author: Daniel Defoe III. Setting: Crusoe Island IV. Characters: Robinson Crusoe – The main character; adventurous and gets marooned on an island Man Friday – A young native rescued by Crusoe from the cannibals Captain Nathan – An Englishman; captain of Her Majesty’s ship named Norfolk V. Summary: Against his parents’ wishes‚ sixteen-year-old Robinson Crusoe sets sail from Hull on a sea voyage. A storm wrecks their ship but
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determining the metal cations present in an unknown sample. This was performed by using reagents that reacted with the metal cations deposited on the paper. The retention factor of each known cation was calculated in order to determine which metal cations were present in two unknown samples. Objective: Effectively use Paper Chromatography to analyze quantitative and qualitative data of different metal cations‚ in an effort to correctly identify two unknown samples of metal cations‚ by comparing them
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+ 2Na+ The second set of titrations was to use the now standardized Na2EDTA solution to determine an unknown water sample’s hardness. The unknown water sample is # 89. Water’s hardness arises from metal ions with a charge of +2 or higher. So for this experiment‚ the previously stated reaction can be used as follows: (Unknown #89)2+ + Na2EDTA → (Unknown #89)EDTA + 2Na+ In conclusion‚ unknown sample #89 has a water hardness value of 209.5 ppm Introduction: The purpose of this
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a systematic approach to identify six unknown substances. In the first half of the experiment six unknown substances were observed than measured by determining volume‚ mass and density. The second half of the experiment the unknown were placed in a test tube and tested for solubility. It was determined that the six tubes contained coffee‚ potting soil‚ brown sugar‚ baby powder‚ baking soda‚ and powdered sugar. By the use of the scientific method each unknown subject could be identified. Hypothesis:
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