Examine the IR below and classify the compound. A) carboxylic acid B) Alcohol C)

Question

Examine the IR below and classify the compound. A) carboxylic acid B) Alcohol C) Aldehyde D) Ketone Which of the following statements about constitutional isomers is true? A) Constitutional isomers are same molecules having different molecular formula. B) Constitutional isomers are different molecules having same molecular formula. C) Constitutional isomers are different molecules having different molecular formula. D) Constitutional isomers are same molecules having the same molecular formula. What is the common name of the following alkyl group? A) sec-Butyl B) Isopropyl C) Isobutyl D) tert-Butyl

Explanation / Answer

Q3.

the graph shows a broad peak in the 3000 area, menain ghtere is a OH group presnet

Also

there is a strong peak at 1700, meaning there is a C=O group

this is most likely a cabroxilic acid

Q4.

constitutional isomers --> they have the same number of atoms but different arrangmeent

so

is by molecule we mean the geometric arrangmeent of atoms, then

the molecules are different but theyu have the same molecular formula ( atom count)

so choose

B

Q5.

that alkyl group should be 4 carbons --> butyl

this is a secondary carbon so

sec-butyl

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