a. Both the reactant and product show very similar IR spectra. For the reactant, indicate which IR signals are due to the presence of the amide group? Specifically, which signal is due the NH stretch (indicate which signal is due to the "free" NH stretching vibration and which signal is due to the "hydrogen bonded" NH stretching vibration? You may either type your answers below, or write your answers on the given spectrum shown above. ⚫ NH bond (Hydrogen bonded) Type response here ⚫ NH bond ("free") Type response here • Carbonyl bond Type response here Xarance 20 1. With reference to the IR spectra given below, answer the following questions. 100 * Tarmillance 00 100 20 M 20 Reactant-acetanilide m 4000 2500 2000 2900 2000 1500 1000 Wavenumber (cm) Product: 4-bromoacetanilide 4000 2500 2000 2900 Wavenumber (cm) 2000 1500 1000

complete the following table for the significant signals in the IR spectrum (add additional rows if necessary)

A student attempted to create the following conjugated compound via a double elimination. The mass spectrum showed the correct compound had been formed. And yet, the IR spectrum should definitive evidence that the wrong compound was formed. Answer using the bold letters. What do you think was formed ? Which functional group? A alcohols B alkyne C ketone D another functional group What peak was lacking from the IR spectrum that should have been there E 1500-1800cm1 F 2000-2500cm-1 G 3000-3500cm1 What peak was present in the IR spectrum that confirmed the wrong product H 1500-1800cm1 I 2000-2500cm1 J 3000-3500cm1 Br 2eq NaOH

The HNMR spectra shown below contains six singlets that correspond to the six different proton groups identified in structure 1. Use an HNMR table to help match each signal to a proton group.

%Tramitac 20 1. With reference to the IR spectra given below, answer the following questions. 60 100 00 20 40 60 100 M Reactant-acetanilide 0 4000 3500 3000 2500 2000 1500 1000 Wavenumber (cm) 20 Product: 4-bromoacetanilide 0 4000 3 3500 3000 2500 2000 1500 1000 Wavenumber (cm)

Provide the complete mechanism using CAF for the reaction shown below. Tell how many signals are visualized in the 1H spectrum for the starting material and the product. H₂O, H₂SO4 gr=gr NH₂ heat OH + NH4+ HSO4

Please answer question 5,7 and 9 step-by-step thank you.

Fill in the following by identifying the peaks you labeled in your spectrum. Assign the peaks to the functional group vibrations listed. More than one peak (label) may appear for a vibration of a functional group .Functional Group Vibration Aromatic C-H stretching vibration Ketone C O stretching vibration cop bending vibration on monosubstituted aromatic ring (phenyl)..

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