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Write structural formulas for all the constitutional isomers of 

(c) C3H4

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Write structural formulas for all the constitutional isomers of 

(b) C3H6

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Write structural formulas for all the constitutional isomers of 

(a) C3H8

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Write structural formulas for all the constitutionally isomeric compounds having the given moleclular formula.

(e) C3H9N

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Write structural formulas for all the constitutionally isomeric compounds having the given moleclular formula.

(d) C4H9Br

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Write structural formulas for all the constitutionally isomeric compounds having the given moleclular formula.

(c) C2H4Cl2

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Write structural formulas for all the constitutionally isomeric compounds having the given moleclular formula.

(b) C5H12

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Write structural formulas for all the constitutionally isomeric compounds having the given moleclular formula.

(a) C4H10

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Uscharidin is the common name of a poisonous natural product having the structure shown. Locate all of the following in uscharidin: 

 (a) Alcohol, aldehyde, ketone, and ester functional groups

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Write a more stable contributing structure for each of the following. Use curved arrows to show how to transform the original Lewis formula to the new one. Be sure to specify formal charges, if any.

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Write a more stable contributing structure for each of the following. Use curved arrows to show how to transform the original Lewis formula to the new one. Be sure to specify formal charges, if any.

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Write a more stable contributing structure for each of the following. Use curved arrows to show how to transform the original Lewis formula to the new one. Be sure to specify formal charges, if any.

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Write a more stable contributing structure for each of the following. Use curved arrows to show how to transform the original Lewis formula to the new one. Be sure to specify formal charges, if any.

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Write a more stable contributing structure for each of the following. Use curved arrows to show how to transform the original Lewis formula to the new one. Be sure to specify formal charges, if any.

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Write a more stable contributing structure for each of the following. Use curved arrows to show how to transform the original Lewis formula to the new one. Be sure to specify formal charges, if any.

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Consult Table 4.1 and classify each nitrogen-containing functional group in the anesthetic lidocaine according to whether it is an amide, or a primary, secondary, or tertiary amine. 

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Write a more stable contributing structure for each of the following. Use curved arrows to show how to transform the original Lewis formula to the new one. Be sure to specify formal charges, if any.

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Write a more stable contributing structure for each of the following. Use curved arrows to show how to transform the original Lewis formula to the new one. Be sure to specify formal charges, if any.

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Write a more stable contributing structure for each of the following. Use curved arrows to show how to transform the original Lewis formula to the new one. Be sure to specify formal charges, if any.

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The compound  zoapatanol  was isolated from the leaves of a Mexican plant. Classify each oxygen in zoapatanol according to the functional group to which it belongs. If an oxygen is part of an alcohol, classify the alcohol as primary, secondary, or tertiary. 

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Which one of the following is not a permissible contributing structure? Why? 

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Some of the most important organic compounds in biochemistry are the α-amino acids, represented by the general formula shown.

Write structural formulas for the following α-amino acids.

 (g) Aspartic acid (R = XCH2 , where X is the functional group that characterizes carboxylic acids)  

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In each of the following pairs, determine whether the two represent resonance contributors of a single species or depict different substances. If two structures are not resonance contributors, explain why. 

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In each of the following pairs, determine whether the two represent resonance contributors of a single species or depict different substances. If two structures are not resonance contributors, explain why. 

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Some of the most important organic compounds in biochemistry are the α-amino acids, represented by the general formula shown.

Write structural formulas for the following α-amino acids.

 (e) Serine (R = XCH2 , where X is the functional group that characterizes alcohols)  

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