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- Calculate the index of hydrogen deficiency of this compound Q.) Ascorbic acid (vitamin C), C6H8O6molecular weight of H2O is 18 but his boilling point 100C, WHY? *The dipole moment of bromobenzene is 5.17 × 10−30 C m and its polarizability volume is approximately 1.5 × 10−29 m3. Estimate its relative permittivity at 25 °C, when its mass density is 1491 kg m−3.
- The NMR spectrum of bromocyclohexane indicates a low field signal (1H) at δ 4.16. To room temperature, this signal is a singlet, but at -75 ° C it separates into two peaks of unequal area (but totaling one proton): δ 3.97 and δ 4.64, in ratio 4.6: 1.0. How do you explain the doubling in two peaks? According to the generalization of the previous problem, what conformation of the molecule predominates (at -75 ° C)? What percentage of the molecules does it correspond to? Solve all parts otherwise down vote and hand written solutionCan you give an example of homotopic, heterotopic, enantiotopic, and diastereotopic for compounds?Oxidation of citronellol, a constituent of rose and geranium oils, with PCC in the presence of added NaOCOCH3 forms compound A. A has amolecular ion in its mass spectrum at 154 and a strong peak in its IRspectrum at 1730 cm−1, in addition to C—H stretching absorptions.Without added NaOCOCH3, oxidation of citronellol with PCC yieldsisopulegone, which is then converted to B with aqueous base. B has amolecular ion at 152 and a peak in its IR spectrum at 1680 cm−1, inaddition to C—H stretching absorptions. a.) Identify the structures of A and B.b.) Draw a mechanism for the conversion of citronellol to isopulegone.c.) Draw a mechanism for the conversion of isopulegone to B.
- The proton resonance of the OH group is found at δ 5.80 for phenol and at δ 10.67 for 2- nitrophenol, both in dilute solution of deuterated chloroform CDCl3 . Explain.Which of (a)-(d) indicates the multiplicities for hydrogens on C1, C3, and C4 of butanone attributable to spin-spin coupling in its 1H-NMR spectrum.N-propylbenzene, C6H5CH2CH3, contains C (sp3) -H and C (sp2) -H bonds. Its IR spectrum shows strong or medium absorptions at 3085, 3064, 3028, 2960, 2931 and 2873 cm ^ -1, as well as bands below 1600cm -1. Which statement is wrong? A.) Stretching of the C (sp3) -H bonds results in absorptions at lower wave numbers than the stretching of the C (sp2) -H bonds. B.) The absorptions at 2960, 2931 and 2873 cm ^ -1 are assigned to stretching of the C (sp3) -H bonds. C.) The absorptions at 3085, 3064 and 3028 cm ^ -1they are assigned to stretching of the C (sp2) -H bonds. D.) Each absorption can be assigned to the stretch mode of a particular bond in the propylbenzene molecule.