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- Hydrocarbon Analysis. Based on the HYDROCARBONS TABLE below, answer the following questions accordingly. All hydrocarbons are clear, colorless liquids at room temperature. HYDROCARBONS Test A в 1. Ignition Test 2. Solubility in conc. H;SO, 3. w/ dil. MnO, (aq.), neutral slightly yellow flame insoluble Orange sooty flame insoluble Yellow flame w/ little soot soluble no color change no color change immediate color change no color change (color change may happen under UV) (color change may happen with catalyst) immediate color change color change no color change 4. w/ Br2 5. w/ dil. MnO, (aq.), basic 6. w/ conc. HNO, and no color change color change colorless layer yellow oily layer colorless layer conc.H,SO. Identify the reactions involved for the following reagents/results among hydrocarbons A, B and C. Choose from the following options. • Combustion • Halogenation • oxidation and dihydroxylation Nitration • Oxidation of alkyl substituent(a) A sample of aspirin (acetyl salicyclic acid) of molecular mass 180, on analysis was found to contain60% carbon, 4.4% hydrogen and 35.6% oxygeni.Determine the empirical formula of aspirinii. What is the molecular formula of aspirin?iii. State the technique that can be used to determine the molecular weight of aspirinb) i. Given the structure of all the isomers of a compound with molecular formula C3H6Cl2ii. Which structure(s) in b(i) is(are) optically active?1. What boiling point of the following mixture of compounds. Then, which would boil first? And Finally, indicate what type of distillation will you use to separate them.
- Another source of phosphorus in water is known as organic phosphorus which commonly finds its way into natural bodies of water from human and animal waste and food residues. If you wish to measure the phosphorus content due to organic matter in the water sample using the vanadomolybdophosphoric acid method, you must first "digest" the sample to convert the organic phosphorus to orthophosphate. O True O FalseA 0.4044 g solid organic sample containing covalently bound bromide and no otherhalogens was placed in a porcelain crucible with about one gram of fresh sodium metal. Ina process known as sodium fusion, the mixture was heated in a furnace to 450°C whichcharred and vaporized the organic portion of the molecule and converted the covalentbromide into sodium bromide. Excess sodium was decomposed by adding small portionsof water which also dissolved the sodiumbromide. The clear solution was quantitatively transferred to a beaker, acidified with dilutenitric acid, and diluted to about 50 mL. A 6 mL quantity of 0.1 M AgNO₃ was added to thesolution andthe mixture heated to about 60°C for an hour to age and digest the precipitate. After filtering,the mass of the silver bromide produced was determined to be 37.8 mg. What is thepercentage by mass bromine in the organic compound? (Ag=107.868, N=14.0067,O=15.9994, Br=79.904)Write a balanced equation for combustion of benzoic acid, C6H5CO2H, to give CO2 and H2O. How many milligrams of CO2 and of H2O will be produced from 4.635 mg of benzoic acid?