Answer the following questions Questions 1,2,3,4   FIGURE 1 1) The...

Answer the following questions

Questions 1,2,3,4

 

FIGURE 1

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PerkinElmer Spectrum Version 10.4 4 Friday. 15 October, 2021 10.41 AM Analyst Administrator Date Friday, 15 October, 2021 10:41 AM 99 98 96 94 92- 90 3068 88 2827.71cm-1 2553.50cm-1 86 1601 14cm 84 1682 69cml 1453.10cm 82 1420.46c 80 685 pom-1 931.93cm-1 78 1323.65cm-1 76 74 605 31cm-1 72 1677.25cm-1 1288.90cm-1 704 2cm-1 71 4000 3500 3000 2500 2000 1500 1000 600 cm-1

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1) The above is the FTIR Spectrum for benzoic acid. State ALL the functional groups of the compound (benzoic acid)

2) Fill in the following table based on 1 (FOR ALL FUNCTIONAL GROUPS ASSOCIATED FOR BENZOIC ACID)

 

FORM A TABLE. 

3)Refer figure 1. MARK correctly all the functional groups (benzoic acid) based on the diagram (figure 1)

 

4) Explain further about the the bonds,wavenumber and functional groups associated with benzoic acid. (based on question 2). Relate to the characteristics of absorption spectrum.be very clear

 

 

 

For questions 1-4.Refer the following as a reference (please use)

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SOME CHARACTERISTIC IR ABSORPTION BANDS Wavenumber, cm" Bond Functional Group 2960-2850(s) C - H (sp)) Alkanes 2760 - 2700, 2860 - 2800 (w), (a pair of bands) C-H Aldehydes 3080 - 3020 (m) C - H (sp ) Alkenes 3100 - 3000 (m) C-H Aromatic Rings 3333 - 3267 (s) C - H (sp) Alkynes 1680 - 1640 (m, w) C =C Alkenes 2260 - 2100 (m) CEC Alkynes 1600, 1500 (w), usually shows C = C Aromatic Rings several peaks 1400 - 1090 (s) C-O Alcohols, Ethers, Esters 1320 - 1210 (m) C-O Carboxylic acids 1760 - 1670 (s) C =0 Aldehydes, Ketones, Carboxylic acids, Esters Hydrogen-bonded - Alcohols, 3600 -3200 (b) O- H Phenols 3400 - 2500 (b) O -H Carboxylic acids 3500 - 3300 (m) N-H Amines 1340 - 1020 (m) C-N Amines 2260 - 2220 (m) CEN Nitriles Intensities : s = strong, m = medium, w = weak, b = broad h = 6.63 x 10 3 Js c = 3.00 x 10' ms

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