Question

In: Chemistry

​Examine the IR below and classify the compound.

Examine the IR below and classify the compound.

image.png

Alcohol

Aldehyde

Carboxylic acid

Ketone


Solutions

Expert Solution

Answer is carboxylic acid actually given IR spectrum is of ethanoic acid as ethanoic acid contains

  • carbon-oxygen double, C=O
  • carbon-oxygen single, C-O
  • oxygen-hydrogen, O-H
  • carbon-hydrogen, C-H
  • carbon-carbon single, C-C

  • structure:



    The carbon-oxygen single bond has an absorbtion in the fingerprint region, varying between 1000 and 1300 cm-1 depending on the molecule

  • The C-H bond (where the hydrogen is attached to a carbon which is singly-bonded to everything else) absorbs somewhere in the range from 2853 - 2962 cm-1

  • The carbon-oxygen double bond, C=O, is one of the really useful absorptions, found in the range 1680 - 1750 cm-1

  • The other really useful bond is the O-H bond. It is easily recognised in an acid because it produces a very broad trough in the range 2500 - 3300 cm-1.

queen_honey_blossom answered 2 years ago
Next > < Previous

Related Solutions

​Examine the IR below and classify the compound
Examine the IR below and classify the compound 
Identify the compound A (C5H10O) with the proton NMR spectrum shown. Compound A has IR absorptions...
Identify the compound A (C5H10O) with the proton NMR spectrum shown. Compound A has IR absorptions at 3200–3600 cm–1 (strong, broad), 1676 cm–1 (weak), and 965 cm–1, and also has 13C NMR absorptions (attached protons in parentheses) at δ 17.5 (3), δ 23.3 (3), δ 68.8 (1), δ 125.5 (1), and δ 135.5 (1). Compound A may be resolved into enantiomers; draw one molecule of A, omitting wedge/dash bonds.
1. if a compound has a NMR resonance at 9.5 ppm , and an IR absorbance...
1. if a compound has a NMR resonance at 9.5 ppm , and an IR absorbance at 2550cm^-1, what functional group does the molecule contain? a) ketone b)alkyne c)carboxylic acid d)aldehyde e)amine f) nitrile 2. when examining an NMR spectra you see peaks between 7-8 ppm. Which of the following compounds would assume you were analyzing? a) benzene b) (e) 3-penten-2-one c)2-cyclopropene-1-carboxylic acid d) formylcyclohexane
15). Classify each of these substances as an element, a compound, or a mixture. a). A...
15). Classify each of these substances as an element, a compound, or a mixture. a). A sample of “laughing gas” (dinitrogen monoxide, also called nitrous oxide) b). Steam coming from a pan of boiling water c). A bar deodorant soap d). A sample of copper e). A cup of mayonnaise f). The helium filling a ballon
1) Classify each of the following as a mixture, a compound, or an element? table sugar,...
1) Classify each of the following as a mixture, a compound, or an element? table sugar, propane, bronze, tea, vinegar, dry ice, oxygen, aluminum 2) Select the statements that pertain to elements. Select all the statements that apply. a) These can be broken down by physical means. b) These cannot be broken down by chemical means. c) These combine chemically to form new substances; they are building blocks of matter. d) These are chemical combinations of simpler forms of matter....
a compound with molecular formula c8h6o2 has an intense signal at 1696 cm-1 in its ir...
a compound with molecular formula c8h6o2 has an intense signal at 1696 cm-1 in its ir spectrum and only two signals in its 1H NMR spectrum (singlets at 10.14ppm and 8.05ppm). Draw the structure of the compound.
Classify each substance as an element, a compound, a homogeneous mixture, or a heterogeneous mixture. Element...
Classify each substance as an element, a compound, a homogeneous mixture, or a heterogeneous mixture. Element Compound Homogeneous mixture Heterogeneous mixture Answer BankAnswer BankClassify the phrases pertaining to pure substances and mixtures as either true or false. True False Components of a homogeneous mixture are visibly distinct. The components of homogeneous and heterogeneous mixtures cannot be separated, Heterogeneous mixtures contain more than one part, and each part has its own properties. Homogeneous mixtures have uniform properties throughout Pure substances only contain one type of substance and...
Classify each compound as an acid, salt, base, oxide, binary molecular, or organic. AlF3                            &nbs
Classify each compound as an acid, salt, base, oxide, binary molecular, or organic. AlF3                                        9. CCl4                                   17. NO2         HNO3                                      10. H2SO4                             18. NH4Cl NaNO3                                   11. CuCl2                              19. C3H7OH N2O2                                       12. NH4ClO3                         20. NH3 Ca(OH)2                                 13. Sn(OH)4                         21. CH3CH2CH2CH3 CH4                                         14. ClO2                                22. H2O NH4OH                                   15. Na2O                              23. (NH4)2O Fe2O3                                      16. SiO2                                24. HC2H3O2
For each of the substances in below classify it as a strong or weak electrolyte and...
For each of the substances in below classify it as a strong or weak electrolyte and state whether it exists in solution as molecules, ions, or a mixture of both molecules and ions. a) hypochlorous acid       b) strontium hydroxide       c) perchloric acid       d) butanoic acid
Summarize IR Spectroscopy and what are real-life analogies to IR spectroscopy?
Summarize IR Spectroscopy and what are real-life analogies to IR spectroscopy?
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT