Task 3: The chemical tests used in order to carry out and collect these results are useful for the simple identification of colourless organic liquids and ones that are often found at the scenes of crime. The first test carried out was the Lucas test which was used to identify a variety of alcohols following the contribution of a given solution‚ from carrying this out I could then identify that primary and secondary alcohols were present with one tertiary alcohol also being present however despite
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investigate the reaction between bromine and methanoic acid:- Br2 (aq) + HCOOH (aq) ↓ 2Br- (aq) + 2H+ (aq) + CO2 (g) Bromine in aqueous solution is orange-yellow‚ but all the products and the methanoic acid are colourless. The colour gradually fades as the reaction proceeds. In this experiment we wish to determine the order of the reaction with respect to bromine. By using a concentration of methanoic acid which is 10 times greater than that of the bromine we can assume that the
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Cyclohexanol Organic Chemistry Lab 1 Tuesday 8:00 11/08/11 Paul Jackson Abstract: The goal of this experiment was to form cyclohexene from cyclohexanol through a dehydration reaction. Cyclohexene was successfully synthesized according to the bromine test performed and the IR spectra. There was a percent yield of cyclohexene of 76.1%. Introduction: Alkenes‚ hydrocarbons containing at least one carbon-carbon double bond‚ are important functional groups in natural and synthetic compounds. One
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85% phosphoric acid and sulfuric acid. Tests for unsaturation were performed adding drops of bromine in tetrachloride and potassium permanganate to four test tubes‚ two containing 5 drops of cyclohexanol(control)‚ and two containing cyclohexene(prepared product. 3 drops of bromine solution changed the product from red to clear within in 5 seconds. The control remained red after 5 drops of bromine were added. Likewise‚ 3 drops of potassium permanganate changed the product from purple to brown
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reagent we need to find the number of moles of acetanilide‚ and the number of moles of Bromine. Mass of Acetanilide used = 0.67g Molar mass of Acetanilide = 135.16g/mol[1] Number of moles of Acetanilide = (0.67g) / (135.16g/mol) = 0‚005 mols Volume of Bromine = 0.25ml Density of Bromine = 3.103 g/ml[2] Mass of Bromine = (0.25ml) X (3.103g/ml) = 0.78g Molar mass of Bromine = 79.9g/mol[2] Number of moles of bromine = (0.78g) / (79.9g/mol) = 0‚0097 mols Acetanilide is the limiting reagent -To find
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reaction involving the hydrocarbon C15H32 might be: Apparatus: eye protection‚ 2 test tubes‚ boiling tube‚ delivery tube‚ stopper‚ Bunsen burner‚ pipette‚ bromine water‚ lava rocks‚ air tube‚ clamp‚ paraffin oil‚ wool‚ stand‚ trough‚ water Hypothesis: We will collect the alkanes and alkenes in a test tube and when we put bromine water in‚ the water will turn from yellow to transparent in the presence of an alkene. Method: 1. Place some wool in the back of the boiler tube. Using
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(which will be known through parallel chemical tests). Three tests‚ nitration test‚ bromine test and basic oxidation test were conducted to fully differentiate each type of hydrocarbon from one another. Nitration tests resulted to three positive outcomes and two negative outcomes. A positive outcome in the nitration test shows that the hydrocarbon is aromatic while a negative outcome is aliphatic. In the bromine test‚ the results showed that there is one saturated aliphatic while the other is unsaturated
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The Chemistry of Lipids Experiment #8 Objective To observe the solubility of lipids in polar and nonpolar solvents and to compare saturated and unsaturated fats in their chemical reaction with bromine. The percent fat in a food will be determined by extraction of the fat and weighing it. Introduction Lipids‚ by definition‚ are natural substances that do not mix with water but dissolve in organic solvents. There are several classes of lipids‚ including: fatty acids‚ waxes‚ triacylglycerols
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Abstract The bromination of trans-cinnamic acid was completed to determine dibromide’s stereochemical structure and its mechanism. After the addition of bromine to trans-cinnamic acid‚ the product was identified by its melting point and infrared spectrum resulting in erythro-2‚3-Dibromo-3-phenylpropanoic acid after comparing similar properties. Introduction In this lab‚ the bromination of trans-cinnamic acid was completed to determine dibromide’s stereochemical structure‚ and from there determine
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acetic acid dropwise until full dissolution has occured. 4. In the fume hood‚ add 0.6 mL of 4.1 M bromine solution in acetic acid. 5. Cap the round bottom flask before returning to the bench. 6. For 15-20 minutes‚ stir the reaction mixture at room temperature so that the reddish-orange coloration will fade and a solid precipitate will form. 7. Return to the hood and add a few more drops of the bromine solution in the hood if all the coloration fades. 8. Once the reaction is complete‚ return to
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