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Chapter 12: 40E (page 385)

Carvone (Problem 12-39) has an intense infrared absorption at . What kind of ketone does carvone contain?

Short Answer

Expert verified

Ketone is a cyclic conjugated ketone

Step by step solution

01

Definition of Infrared absorption

Infrared is the electromagnetic waves that are irradiated on the compound to identify the strength of the chemical bonds present within the compound.

The absorption of the infrared radiation termed infrared absorption

This method helps us to determine exchangeable atoms.

02

Carvone

Carvone belongs to the family of terpenoids. These are the chemicals found naturally in essential oil but most abundantly in the oils from the seeds of dill and many others.

03

Infrared absorption

The range would be of C=C and that of indicates that the ketone is cyclic conjugated ketone as from the formula, we calculated that O is present.

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Most popular questions from this chapter

Most stable organic species have tetravalent carbon atoms, but species with trivalent carbon atoms also exist. Carbocations are one such class of compounds.

(a) How many valence electrons does the positively charged carbon atom have?

(b) What hybridization do you expect this carbon atom to have?

(c) What geometry is the carbocation likely to have?

The following model is a representation of ibuprofen, a common over-the-counter pain reliever. Indicate the positions of the multiple bonds, and draw a skeletal structure (gray 5 C, red 5 O, ivory 5 H).

Question: Halogenated compounds are particularly easy to identify by their mass

spectra because both chlorine and bromine occur naturally as mixtures

of two abundant isotopes. Recall that chlorine occurs as 35Cl (75.8%)

and 37C (24.2%); and bromine occurs as 79Br (50.7%) and 81Br (49.3%).

At what masses do the molecular ions occur for the following formulas?

What are the relative percentages of each molecular ion?

(a)Bromomethane, CH3Br

(b)1-Chlorohexane, C6H13Cl

Question: Write molecular formulas for compounds that show the following molecular ions in their high-resolution mass spectra, assuming that C, H, N, and O might be present. The exact atomic masses are: 1.00783 (H1), 12.00000 (C12), 14.00307 (N14), 15.99491 (O16).

a)M+=98.0844b)M+=123.0320

Where might the following compound have IR absorptions?
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