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Chapter 21: Q142AE (page 889)

The two isomers having the formula C2H6O boil at -230C and 78.50C. Draw the structure of the isomer that boils at -230C and of the isomer that boils at 78.50C.

Short Answer

Expert verified

Ethanol boils at 78.50C. Methoxymethane boils at -230C. The structures are as follows

Ethanol Methoxymethane

Step by step solution

01

To draw the structure of the isomer

We can draw two isomers with molecular formula C2H6O, ethanol, and methoxymethane.

Ethanol has a hydroxyl group that can engage in hydrogen bonding. In comparison, ethers cannot engage in hydrogen bonding with each other, and because of that, they have lower boiling points than alcohols.

02

Structures

Ethanol Methoxymethane

Hence Ethanol boils at 78.50C. Methoxymethane boils at -230C.

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Most popular questions from this chapter

Complete the following reactions

a.CH3CO2H + CH3OH→b.CH3CH2CH2OH + HCOOH→

Distinguish between the primary, secondary, and tertiary structures of a protein. Give examples of the types of forces that maintain each type of structure

Carboxylic acids are often written as RCOOH. What does -COOHindicate, and what does Rindicate? Aldehydes are sometimes written as RCHO. What does-CHOindicate?

What types of interactions can occur between the side chains of the following amino acids that would help maintain the tertiary structure of a protein?

a. cysteine and cysteine

b. glutamine and serine

c. glutamic acid and lysine

d. proline and leucine

In 1994 chemists at Texas A\&M University reported the synthesis of a non-naturally occurring amino acid:

a. To which naturally occurring amino acid is this compound most similar?

b. A tetrapeptide, phe-met-arg-phe-is synthesized in the brains of rats addicted to morphine and heroin. (Theindicates that the peptide ends ininstead of.) The TAMU

scientists synthesized a similar tetrapeptide, with the synthetic amino acid above replacing one of the original amino acids. Draw a structure for the tetrapeptide containing the synthetic amino acid.

c. Indicate the chiral carbon atoms in the synthetic amino acid.

d. Draw the geometric isomers for this synthetic amino acid. (Hint: Refer to Exercise 25.)
See all solutions

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