to: Determine the molecular weight of benzene and an unknown liquid by applying the simple variation of the Dumas Method which is an appropriate process in the determination of organic volatile substances that are liquid at room temperature. Utilize the Ideal Gas Law and Berthelot’s equation in connection with the experiment Get a hint in the identity of the unknown volatile liquid. II. Research Questions What is the molecular weight of Benzene? What is the molar mass of the unknown
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This peak is a singlet which indicates that the aldehyde proton is not coupled to any other proton this is because the carbon adjacent does not contain any hydrogens. This would be consistent with the aldehyde group being directly attached to the benzene ring. If the peak was between 9.4 and 10 ppm this would be consistent with the aldehyde group being bound to a linear carbon system. As this peak is between 9.7 and 10.5 ppm2 this expected for an aldehyde proton attached to an aromatic
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the pure components. By contrast‚ if a mixture of benzene and water (Immiscible liquids) is distilled‚ the boiling point of the mixture will be found below the boiling point of each pure component. Since the two liquids are essentially insoluble in each other‚ the benzene molecules in a droplet of benzene are not diluted by water molecules from nearby water droplets‚ and hence the vapor pressure exerted by the benzene is the same as that of benzene alone at the existing temperature. The same is
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reduced mass and point group were obtained for each of the molecules created. In addition the energy in Hartee for each molecule was also obtained. The molecules used were Iodine (I2)‚ Carbon Monoxide (CO)‚ Cyanide ion (CN-)‚ Acetonitrile (CH3CN) and Benzene (C6H6). The energy equations used previously allows one to solve the Schrodinger equation for molecular energies. The Hamiltonian operator in the energy equation‚ containing the electron correlation is more complicated and cannot be solved. The
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reddish-brown gas that is irritating to the lungs. Air toxics are chemicals such as benzene. “Benzene is used as a constituent in motor fuels; as a solvent for fats‚ waxes‚ resins‚ oils‚ inks‚ paints‚ plastics‚ and rubber; in the extraction of oils from seeds and nuts; and in photogravure printing. It is also used as a chemical intermediate. Benzene is also used in the manufacture of detergents‚
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This experiment involved a substitution reaction to perform synthesis of 2-phenylethanol to get (2-bromoethyl)benzene. Using NaBr in an acidic solvent of H2SO4 with H2O present‚ this synthesis was possible. Subsequent evaluations using TLC and then analyzed samples by Gas Chromatography were done to evaluate the results. Using SN2 reactions‚ primary alcohol is going to be converted to alkyl halide. Since the reaction can be reversed‚ the strong sulfuric acid was to make sure the product would indeed
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following is vinyl halide? (a) CH2CL2 (b) CH2= CH-Cl (c) CH = C-Cl (d) 6) What is B in R-OH + PX5 R-X +B+ HX? (a) HPOX3 (b) H3PO3 (c) POX3 (d) H3PO2 7) Which catalyst is used in preparation of bromobenzene by bromination of benzene? (a)FeBr3 (b) HBr (c) AlBr3 (d) Br2 8) By which name the reaction CH3 - Br + Ag- F CH3F + AgBr is known? (a) Grignard (b) Wurtz (c) Fitting (d) Swartz 9) What are nucleophilic reagents according to Lewis theory? (a) Acid
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and test tube dilution method respectively. The GC-MS study revealed the presence of ten compounds in n-hexane extract namely Hexadecane(1)‚ 2-[4a‚ 8-Dimethyl-3‚4‚4a‚5‚6-hexahydro-napthalene-2-yl]-prop-2-en-1-ol(2)‚ Heptadecane(3)‚ Benzene‚ [1-butylheptyl]-(4)‚ Benzene‚ [1-methyldecyl]-(5)‚ Oxirane‚ tetradecyl-(6)‚ Hexadecanoic acid‚ methyl ester(7)‚ Hexadecanoic acid‚ ethyl ester(8)‚ 9‚12‚15- Octadecatrienoic acid‚ ethyl ester‚ [Z‚Z‚Z]-(9)‚ Lupeol (11) . The ethanolic extract of the aerial parts
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Benzoic Acid and Benzoates in Food‚ Drinks and Medicines Benzoic acid and benzoates are common additives to food‚ drinks‚ medicines and cosmetics‚ and they also occur naturally in many plants. They are useful chemicals in manufactured products because they kill or inhibit both bacteria and fungi and can act as preservatives. Benzoic acid and benzoates are considered to be safe chemicals for humans when they’re used in small quantities‚ but there are at least two situations in which even small
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* Introduction to Organic Chemistry Understand the basis of drawing organic structures Depicting 3-D structures in 2-D Most organic compounds have a three-dimensional structure. How do we represent structures on our two-dimensional page? For example‚ methane is a tetrahedral molecule: Bonds in the plane of the paper: Bonds coming towards the observer: (out of the page) Bonds going away
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