Question 1

For a compound containing substituents other than hydrogen, the number of hydrogen atoms in the equivalent hydrocarbon formula is determined by _____ from the number of hydrogen atoms present.

Accepted Answer

D

Question 2

Choose substituents X and Y (listed in order below) for the following compound so as to make a Z isomer.

Accepted Answer

B

Question 3

A molecule has three degrees of unsaturation. In this molecule there would be

Accepted Answer

A degree of unsaturation (also known as a double bond equivalent) can be a ring or a double bond. Therefore, any combination of rings and double bonds that totals three degrees of unsaturation is possible.

Question 4

Dieldrin, CS1U1B112S1U1B0HS1U1B18S1U1B0ClS1U1B16S1U1B0O, is a pentacyclic (five-ring) compound formerly used as an insecticide. Use this information to answer the following question(s).
-Refer to instructions. How many double bonds does dieldrin have?

Accepted Answer

The answer of Dieldrin, CS1U1B112S1U1B0HS1U1B18S1U1B0ClS1U1B16S1U1B0O, is a pentacyclic (five-ring) compound...

Question 5

Calculate the degree of unsaturation in the formula below. Show your calculations. caffeine, C₈H₁₀N₄O₂

Accepted Answer

The answer of Calculate the degree of unsaturation in the...

Question 6

Provide names for each structure below. Be sure to include the cis,trans or E,Z designations where applicable.
-Rank each set of substituents using the Cahn-Ingold-Prelog sequence rules by numbering the highest priority substituent 1 and numbering the lowest priority substituent 4. Place the number in the blank below the substituent.

Accepted Answer

The answer of Provide names for each structure below. Be...

Question 7

Draw structures corresponding to each name below.
-Draw:
(3E)-3,7-dimethylocta-1,3,6-triene

Accepted Answer

The answer of Draw structures corresponding to each name below.
-Draw:
(3E)-3,7-dimethylocta-1,3,6-triene...

Question 8

A compound with the following molecular formula contains two double bonds. What is the correct subscript for H in the formula? C₁₀H_?ClN₂O

Accepted Answer

The formula for a compound with two double bonds follows the rule CnH2n+2-2x, where x is the number of double bonds. For C10, the formula becomes C10H20-4, which simplifies to C10H16. Adding ClN2O, the correct subscript for H is 19.

Question 9

Provide names for each structure below. Be sure to include the cis,trans or E,Z designations where applicable.
-Which of the following substituents has the highest priority according to the Cahn-Ingold-Prelog system?

Accepted Answer

The Cahn-Ingold-Prelog priority rules state that the higher the atomic number of the immediate substituent atoms, the higher the priority. In this case, oxygen (O) has a higher atomic number than sulfur (S) or carbon (C), making the carboxyl group (−COOH) the substituent with the highest priority.

Question 10

Pent-2-ene is an example of a disubstituted alkene. Use this alkene to answer the following question(s). 
-Refer to instructions. Draw the cis and trans isomers of pent-2-ene and label them.

Accepted Answer

The answer of Pent-2-ene is an example of a disubstituted...

Question 11

What is the IUPAC name of the following compound?

Accepted Answer

The answer of What is the IUPAC name of the...

Question 12

The following group is a substituent on a molecule. What is an accepted IUPAC name for this group?

Accepted Answer

The answer of The following group is a substituent on...

Question 13

Provide names for each structure below. Be sure to include the cis,trans or E,Z designations where applicable.
-Name and designate:

Accepted Answer

The answer of Provide names for each structure below. Be...

Question 14

Draw structures corresponding to each name below.
-Draw:
trans-4,4-dimethylpent-2-ene

Accepted Answer

The answer of Draw structures corresponding to each name below.
-Draw:
trans-4,4-dimethylpent-2-ene...

Question 15

Provide names for each structure below. Be sure to include the cis,trans or E,Z designations where applicable.
-Name and designate:

Accepted Answer

The answer of Provide names for each structure below. Be...

Question 16

Which of the following substituents has the highest priority according to the Cahn-Ingold-Prelog system?

Accepted Answer

According to the Cahn-Ingold-Prelog system, the priority of substituents is determined by the atomic number of the atoms directly bonded to the stereocenter. In this case, all substituents contain nitrogen and/or carbon. The key is to look at the atoms attached to the nitrogen or carbon. In choice B, the nitrogen is attached to a carbon, which is attached to two other carbons and a hydrogen. This is higher priority than the substituents in choices A, C, and D, which have nitrogen or carbon attached to only one other atom. Therefore, choice B has the highest priority substituent.

Question 17

Provide names for each structure below. Be sure to include the cis,trans or E,Z designations where applicable.
-Name and designate:

Accepted Answer

The answer of Provide names for each structure below. Be...

Question 18

Name this compound.

Accepted Answer

The answer of Name this compound. ...

Question 19

Dieldrin, CS1U1B112S1U1B0HS1U1B18S1U1B0ClS1U1B16S1U1B0O, is a pentacyclic (five-ring) compound formerly used as an insecticide. Use this information to answer the following question(s).
-Refer to instructions. Calculate the degree of unsaturation for Dieldrin.

Accepted Answer

The answer of Dieldrin, CS1U1B112S1U1B0HS1U1B18S1U1B0ClS1U1B16S1U1B0O, is a pentacyclic (five-ring) compound...

Question 20

Pent-2-ene is an example of a disubstituted alkene. Use this alkene to answer the following question(s). 
-Refer to instructions. Circle the isomer of pent-2-ene that is most stable.

Accepted Answer

The answer of Pent-2-ene is an example of a disubstituted...

Quiz 7: Alkenes and Alkynes

For a compound containing substituents other than hydrogen, the number of hydrogen atoms in the equivalent hydrocarbon formula is determined by _____ from the number of hydrogen atoms present.

Choose substituents X and Y (listed in order below) for the following compound so as to make a Z isomer.

A molecule has three degrees of unsaturation. In this molecule there would be

Dieldrin, C₁₂H₈Cl₆O, is a pentacyclic (five-ring) compound formerly used as an insecticide. Use this information to answer the following question(s). -Refer to instructions. How many double bonds does dieldrin have?

Calculate the degree of unsaturation in the formula below. Show your calculations. caffeine, C₈H₁₀N₄O₂

Draw structures corresponding to each name below. -Draw: (3E)-3,7-dimethylocta-1,3,6-triene

A compound with the following molecular formula contains two double bonds. What is the correct subscript for H in the formula? C₁₀H_?ClN₂O

Provide names for each structure below. Be sure to include the cis,trans or E,Z designations where applicable. -Which of the following substituents has the highest priority according to the Cahn-Ingold-Prelog system?

Pent-2-ene is an example of a disubstituted alkene. Use this alkene to answer the following question(s). -Refer to instructions. Draw the cis and trans isomers of pent-2-ene and label them.

What is the IUPAC name of the following compound?

The following group is a substituent on a molecule. What is an accepted IUPAC name for this group?

Provide names for each structure below. Be sure to include the cis,trans or E,Z designations where applicable. -Name and designate:

Draw structures corresponding to each name below. -Draw: trans-4,4-dimethylpent-2-ene

Provide names for each structure below. Be sure to include the cis,trans or E,Z designations where applicable. -Name and designate:

Which of the following substituents has the highest priority according to the Cahn-Ingold-Prelog system?

Provide names for each structure below. Be sure to include the cis,trans or E,Z designations where applicable. -Name and designate:

Name this compound.

Dieldrin, C₁₂H₈Cl₆O, is a pentacyclic (five-ring) compound formerly used as an insecticide. Use this information to answer the following question(s). -Refer to instructions. Calculate the degree of unsaturation for Dieldrin.

Pent-2-ene is an example of a disubstituted alkene. Use this alkene to answer the following question(s). -Refer to instructions. Circle the isomer of pent-2-ene that is most stable.

Quiz 7: Alkenes and Alkynes

For a compound containing substituents other than hydrogen, the number of hydrogen atoms in the equivalent hydrocarbon formula is determined by _____ from the number of hydrogen atoms present.

Choose substituents X and Y (listed in order below) for the following compound so as to make a Z isomer.

A molecule has three degrees of unsaturation. In this molecule there would be

Dieldrin, C12H8Cl6O, is a pentacyclic (five-ring) compound formerly used as an insecticide. Use this information to answer the following question(s). -Refer to instructions. How many double bonds does dieldrin have?

Calculate the degree of unsaturation in the formula below. Show your calculations. caffeine, C8H10N4O2

Draw structures corresponding to each name below. -Draw: (3E)-3,7-dimethylocta-1,3,6-triene

A compound with the following molecular formula contains two double bonds. What is the correct subscript for H in the formula? C10H?ClN2O

Provide names for each structure below. Be sure to include the cis,trans or E,Z designations where applicable. -Which of the following substituents has the highest priority according to the Cahn-Ingold-Prelog system?

Pent-2-ene is an example of a disubstituted alkene. Use this alkene to answer the following question(s). -Refer to instructions. Draw the cis and trans isomers of pent-2-ene and label them.

What is the IUPAC name of the following compound?

The following group is a substituent on a molecule. What is an accepted IUPAC name for this group?

Provide names for each structure below. Be sure to include the cis,trans or E,Z designations where applicable. -Name and designate:

Draw structures corresponding to each name below. -Draw: trans-4,4-dimethylpent-2-ene

Provide names for each structure below. Be sure to include the cis,trans or E,Z designations where applicable. -Name and designate:

Which of the following substituents has the highest priority according to the Cahn-Ingold-Prelog system?

Provide names for each structure below. Be sure to include the cis,trans or E,Z designations where applicable. -Name and designate:

Name this compound.

Dieldrin, C12H8Cl6O, is a pentacyclic (five-ring) compound formerly used as an insecticide. Use this information to answer the following question(s). -Refer to instructions. Calculate the degree of unsaturation for Dieldrin.

Pent-2-ene is an example of a disubstituted alkene. Use this alkene to answer the following question(s). -Refer to instructions. Circle the isomer of pent-2-ene that is most stable.

Dieldrin, C₁₂H₈Cl₆O, is a pentacyclic (five-ring) compound formerly used as an insecticide. Use this information to answer the following question(s). -Refer to instructions. How many double bonds does dieldrin have?

Calculate the degree of unsaturation in the formula below. Show your calculations. caffeine, C₈H₁₀N₄O₂

A compound with the following molecular formula contains two double bonds. What is the correct subscript for H in the formula? C₁₀H_?ClN₂O

Dieldrin, C₁₂H₈Cl₆O, is a pentacyclic (five-ring) compound formerly used as an insecticide. Use this information to answer the following question(s). -Refer to instructions. Calculate the degree of unsaturation for Dieldrin.