Question

please help me analyze my IR

my starting materials were

1.1 g of 1-pentanol

2.29g butyric acid

final product- 0.44g

experiment: fischer esterification

our product pentyl butyrate

Analyst Date Administrator Friday, November 01, 2019 4:03 PM Friday, November 01, 2019 403 PM PertanElmer Spectrum Version 1042 Am 216.10cm-1 %T P8404cm-1 1463.97cm-1 01.93cm-1 1253 934-1 29600m-1 3500 3000 1735 pacm-1 2500 2000 cm-1 1500 1179. 15cm-1 1000 Administrator 124 650 Sample 124 By Administrator Date Friday, November 01 2019

Answer 1

Here you go:

Let us understand the reaction first: OH + Hona esferi-har pentyl, butyrate cha C-pentanol bufyric acid 5 How, an IR spectrum is used to get the Knowledge about the molecule. Let us analyze the spectra! D peaks at 2960ant 8287 bent signifies the presence of Sp3c-11 bonds i.e. alkanes and it is coming as doublets 2) The most important is the `C20 (Carbonyl) Stretching frequeney at 1735 cm, which is a signature peak for the ester Carbonyl group, and since you are synthesizing ester, you can confirm by this peak alone. 3) peak @ 1253cm-" is for co-e bending vibration. These all confirms the presence of pentyl butyrate. *Note: Acidic IC=0 comes at 1710 1725 an!