An organic compound can have one of the following structures: The Amar of the ethanolic solution is 242 nm. Which is the most likely structure of the compound?
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use woodward-fieser rules for enones
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- 1: In the sweetening MEROX process for kerosene the mercaptans are converted into (a) Sulpher (b) Disulphide (c) Hydrogen sulphide (d) None of these 2: Which of the following products contain maximum sulphur? (a) Diesel fuel (b) Fuel oil (c) Jet fuel (d) LPG 3: Which of the following petroleum product has a maximum C/H ratio (by weight)? (a) Light diesel oil (b) Fuel oil (c) Naphtha (d) Heating oil 4: Which of the following hydrocarbon are most desirable in gasoline? (a) Paraffins (b) Isoparaffins (c) Naphthenes (d) Aromatic 5: Octane no. of paraffins: (a) Remain constant with change in the number of carbon atoms (b) Increases with increase in the number of carbon atoms (c)Decreases with increase in the number of carbon atoms (d)None of the above 6: Which of the following hydrocarbons has a maximum octane number? (a) Benzene (b) Cyclohexane (c) Hexane (d) Iso-hexane 7: Which of the following petroleum products has a minimum flashpoint? (a)Gasoline (b) Kerosene (c) Fuel oil (d) Heating…(a) What are trihalomethanes (THMs)? (b) Draw the Lewisstructures of two example THMs..For anion NO2-, (a) predict the stereochemistry. Justify your prediction with VSEPR theory and by formal charge; (b) indicate the hybridization appropriate to the stereochemistry; (c) describe the bond character of N-O for the resonance structure.
- Write the Lewis structure for each of the following species,and indicate the structure of each: (a) SeO32 - ; (b) S2Cl2;(c) chlorosulfonic acid, HSO3Cl (chlorine is bonded tosulfur).(a) Triazine, C3 H3 N3, is like benzene except that in triazineevery other C¬H group is replaced by a nitrogen atom.Draw the Lewis structure(s) for the triazine molecule. (b) Estimatethe carbon–nitrogen bond distances in the ring.(a) Triazine, C3 H3 N3, is like benzene except that in triazineevery other C¬H group is replaced by a nitrogen atom. Draw the Lewis structure(s) for the triazine molecule. (b) Estimatethe carbon–nitrogen bond distances in the ring.
- Draw the complete Lewis structure of (CH3)2CHCH(NH2)CO2H and identify all H-bond donors and all H-bond acceptors.Thionyl chloride (SOCl₂) is a sulfur oxohalide used indus-trially to dehydrate metal halide hydrates. (a) Write a balancedequation for its reaction with magnesium chloride hexahydrate,in which SO₂ and HCl form along with the metal halide. (b) Drawa Lewis structure of SOCl₂ with minimal formal charges.2- 7. A Lewis electron-dot diagram of the oxalate ion, C₂0₂², is shown. (a) Identify the hybridization of the valence orbitals of either carbon atom in the oxalate ion. (b) Silver oxalate, Ag₂C₂O4(s), is slightly soluble in water. The value of Köp for Ag₂C₂04 is 5,40 × 10-¹². (i) Write the expression for the solubility-product constant, Kp, for Ag₂C₂04. (ii) Calculate the molar solubility of Ag₂C₂O4 in neutral distilled water.
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