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Cyclohexane Chair Conformations Practice Quiz

By 73 Comments

Chair Conformations Practice Quiz Leah4sciChair 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 Soon!

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 leah4sci

 

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-dibromocyclohexane

b) 1,3-diethylcyclohexanol

c) 4-methylcyclohexanamine

Part 3: Advanced

Question 7: Draw ALL possible chair conformations for 2-tert-butylcyclohexanol 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?

Check your skills with the solutions by hitting the button below

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Comments

  2. Anna Bishop says

    Question 1 is not showing up for me in any browser, It just says: “Name and draw chair conformation practice quiz leah4sci.jpg”

    Reply

  3. John Willson says

    First, thank you for this tutorial, appreciate your work here, you make it so simple and easy, also, Do you have the pdf solution, I couldn’t find it

    Reply

  9. Abhishek says

    can you please put the solutions. I just finished taking the quiz, but all that effort is kind of useless without solutions. thank you for all your hard work on this website 🙂

    Reply

  15. Awa Porgo says

    I watched the tutorial but I am able to classify the chair conformations in question 3 and 4 in order of stability. Can you provide me with a rule so that when I see structures like these I can easily recognize which one is more stable. By the way since I have been watching your videos I stopped relying on google to get answers for my homework. I was able to solve them myself. Your explanation is so clear and enjoyable

    Thank you

    Reply

  19. Starr says

    hello, is the PDF solutions complete yet? I would love to check to see if I am correct in my thinking. Thank you

    Reply

  33. Chelsea Quaies says

    Hello,
    I noticed there is no solutions on this quiz, any chance of adding it?
    I have a quiz monday about this and would love to know if on the right track!!
    thanks!!!

    Reply

  36. Chidinma says

    Hi Leah,
    Thank you so much for your videos; they are very helpful. Are the answers for this quiz up yet?
    Thank you.

    Reply

  39. Yi says

    Hi Lea, Thank you very much for your videos and this quiz! Where can I find the solutions to those questions?

    Thanks!
    Yi

    Reply

  56. Akansha says

    Hi I love your videos I was wondering is it possible you could upload the free pdf to the quiz answer key soon because I have an exam coming up so maybe upload it by tonight or tomorrow thank you for all that you do 🙂

    Reply

  69. Ollie says

    I really appreciate your tutorials so much. Everything gets explained so easily… thank you so much. One small request for the future. Would you mind posting the solutions along with the quiz? As I was trying to do a final review on chair conformations for my test tomorrow, I find that I don’t have the answers to compare to. The solutions may come too late in my case…Either way, thank you so very much for making Organic Chemistry easier to understand. I wish you were my college professor!

    Reply

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