I really need help with #3 and #4 Qs3. Tell how you would use the proton NMR and IR spectra to distinguish between ethyl benzoate and 4-ethylbenzoic acid (drawing the structures will help you a lot). You can draw a schematic NMR spectrum foreach compound, or simply list the peaks that shall be present (including integration and multiplicity).Qs4. Provide the structure of the compound that being a liquid does not dissolve in water. However, underacidic conditions and at elevated temperature it readily dissolves in water with the formation of water-insoluble product. This product can be dissolved in water only at boiling or in a presence of a base. The 13CNMR of the reactant shows 7 signals. Its 1H NMR and IR spectra are below.100-80-60-40-* 20-4.4 4.351.4 1.35400030002000150010005008.7632Wavenumbers (cm-1)Chemical shift (ppm)For a bigger picture (and integration values), see the next page. 100-80-60-40-৪ 20-4.4 4.351.4 1.350-400030002000150010005008764.321Wavenumbers (cm-1)Chemical shift (ppm)For a bigger picture (and integration values), see the next page.10080-40-20-40003000200015001000500Wavenumbers (cm-1)2H4.4 4.351.4 1.358 7541Chemical shift (ppm)% Transmittance% Transmittance60

Hello. Since the question contains multiple parts, the first part is solved. In case the solution for other parts is required, then repost the entire question and specify the part that has to be solved.Qs 3) In IR the peak of the alkyl C-H group is absent in ethyl benzoic acid, which is present in ethyl benzoate at 2996 cm-1. In NMR spectroscopy the chemical shift at 4.30ppm is observed in ethyl benzoate, which is absent in ethyl benzoic acid. The O-H shift at nearly 11-12 ppm is absent in ethyl benzoate. By these values, we can distinguish the compound. The spectra and the values are shown below:The IR values for ethyl benzoate are: Aromatic C-H stretch = 3078 cm-1. Alkyl C-H stretch = 2996 cm-1. α -β unsaturated ester C=O = 1726 cm-1. C-O stretch = 1286 and 1117 cm-1. In ethyl benzoic acid, alkyl C-H stretch is absent. Aromatic C-H stretch is at 3600 cm-1.. C=C stretch = 3000 cm-1. C=O peak = 1725 cm-1. C-O strectch = 1010 cm-1.