Cyclohexane Chair Conformations Practice Quiz

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Cyclohexane Chair Conformations QuizChair conformations can present quite the challenge in Organic Chemistry.

But they don’t have to.

Start by gaining your foundation in the Chair Conformations Tutorial Series

Then test your knowledge and understanding of this topic with the quiz below.

Scroll to the very bottom of this quiz for a link to the FREE quiz solutions PDF to ensure you’ve got this down. Coming Later this week!

Part 1: Warmup Questions

Question 1: Name, then Draw BOTH chair conformations for each of the following cyclohexane hexagon molecules.

Hint: Need help? Review the Drawing Chairs tutorial

name-and-draw-chair-conformation-practice-quiz

Question 2: Determine the total number of Axial and Equatorial hydrogen atoms in trans-decalin as shown below:

trans-decalin-chair-conformation-practice

Question 3: Convert the following chair conformations into planar ‘hexagon’ structures:

chair-conformation-to-cyclohexane-hexagon-practice

 

Part 2: Cyclohexane Ring Flips and Chair Stability

Question 4: Draw the ring flip for each of the following chair conformations

Hint: Don’t forget, up stays up and down stays down. As taught in this Tutorial Video.

chair-conformation-ring-flip-practice-questions

Question 5: Draw the lowest energy chair conformation for each of the following cyclohexane structures.

Beginner students: Draw BOTH chairs and compare energy and stability.

Advanced students: See if you can visualize the molecule and draw ONLY the more stable structure.

chair-conformation-axial-and-equatorial-lowest-energy-practice-questions

Question 6: Determine if the Cis or Trans chair conformation is more stable for each of the following molecules. (Read for a quick review of cis/trans)

a) 1,2-dibromocyclohexanol

b) 1,3-diethylcyclohexanol

c) 4-methylcyclohexanamine

Part 3: Advanced

Question 7: Draw ALL possible chair conformations for 2-tert-butyl-1,4-cyclohexanediol then rank in order of most to least stable.

Question 8: Answer this question WITHOUT drawing a chair conformation/ring flip. Determine if the highlighted atom will appear in the axial or equatorial position in the more stable chair conformation.

Chair Conformations Ranking Axial and Equatorial Stability practice quiz

Challenge Question: 

Convert the following

a) Newman Projection into a chair conformation

b) Chair conformation into a Newman ProjectionChallenge Convert the following newman projection into a chair conformation and chair conformation into a newman projection in Practice Quiz

Need to Review? Study the Chair Conformations Tutorial Series

Rusty on Newman? Watch the Newman Projection Video Series to review

 

Are you SOLID with Chair Conformations?

Do you feel you got the questions correct?
Did you UNDERSTAND how to tackle each question?
FREE PDF Solutions in the works and will be added later this week.

Comments

  1. Sharon Williams says:

    I am very confused when it comes to chair conformation’s.

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