/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Q.20. Question: Calculate the destabil... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 4: Q.20. (page 128)

Question: Calculate the destabilization present in each eclipsed conformation.

a.

b.

Short Answer

Expert verified

Answer

a. The destabilization energyis 3.8 kcal/mol.

b. The destabilization energy is 4.2 kcal/mol.

Step by step solution

01

Conformation

The two main types of conformations are:

  • eclipsed and
  • staggered.

These are based on the dihedral angle.

The conformations are shown below:

Eclipsed and Staggered

02

Calculation of the destabilization energy of a

a. There is one H, H and two CH3, H eclipsing interactions in the given conformation. The value of the destabilization energyis calculated as follows:

role="math" localid="1648531767188" 鈭�E=1H,Heclipsing+2CH3,Heclipsing=1脳1.0+2脳1.4kcal/mol=3.8kcal/mol

Thus, the destabilization energy is 3.8 kcal/mol.

03

Calculation of the destabilization energy of b

b. There are three CH3, H eclipsing interactions in the given conformation. The value of the destabilization energy is calculated as follows:

鈭�E=3CH3,Heclipsing=3脳1.4kcal/mol=4.2kcal/mol

Thus, the destabilization energy is 4.2 kcal/mol.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91影视!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

Question: Although penicillin G has two amide functional groups, one is much more reactive than the other. Which amide is more reactive and why?

Question: Name each alkane using the ball-and-stick model, and classify each carbon as 10,20,30, or 40.

a.

b.

Give the structure corresponding to each IUPAC name.

a. 1,2-dimethylcyclobutane

b. 1,1,2-trimethylcyclopropane

c. 4-ethyl-1,2-dimethylcyclohexane

d. 1-sec-butyl-3-isopropylcyclopentane

e. 1,1,2,3,4-pentamethylcycloheptane

Question: Using the cyclohexane with the C鈥檚 numbered as shown, draw a chair form that fits each description.

a. The ring has an axial CH3group at C1 and an equatorial OH on C2.

b. The ring has an equatorial CH3group on C6 and an axial OH group on C4.

c. The ring has equatorial OH groups on C1, C2, and C5.

Question: The torsional energy in propane is 14 kJ/mol (3.4 kcal/mol). Because each H,H eclipsing interaction is worth 4.0 kJ/mol (1.0 kcal/mol) of destabilization, how much is one H, CH3 eclipsing interaction worth in destabilization? (See Section 4.10 for an alternate way to arrive at this value.)
See all solutions

Recommended explanations on Chemistry Textbooks

Chemical Analysis

Read Explanation

Chemical Reactions

Read Explanation

Kinetics

Read Explanation

Ionic and Molecular Compounds

Read Explanation

Nuclear Chemistry

Read Explanation

Inorganic Chemistry

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.