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Questions and Answers
What is a characteristic of the nitrogen atom in the rightmost resonance form of an amine?
What is a characteristic of the nitrogen atom in the rightmost resonance form of an amine?
- It has a positive charge (correct)
- It is neutral
- It is more electron-rich
- It has a negative charge
What is the result of the Hofmann elimination reaction?
What is the result of the Hofmann elimination reaction?
- Elimination of H2O and formation of an alkene (correct)
- Addition of a NO2 group
- Formation of a C=O group
- Formation of a CN group
What is true about the smell of amines?
What is true about the smell of amines?
- All amines have a sweet smell
- Amines have no distinct smell
- Low molecular weight amines smell sweet, while larger diamines smell rotten
- Low molecular weight amines smell fishy, while larger diamines smell rotten (correct)
What is the geometry of the nitrogen atom in an amine?
What is the geometry of the nitrogen atom in an amine?
What is the result of the reduction of amides?
What is the result of the reduction of amides?
What is the primary reason why amines with 5 or more C atoms are not fully soluble in water?
What is the primary reason why amines with 5 or more C atoms are not fully soluble in water?
Which of the following statements is true about the strength of amines as bases?
Which of the following statements is true about the strength of amines as bases?
What is the primary reason why amides are not good bases?
What is the primary reason why amides are not good bases?
What reaction mechanism is used to delete the C=O group from an amide, forming an amine?
What reaction mechanism is used to delete the C=O group from an amide, forming an amine?
Which of the following is not a method of preparing amines?
Which of the following is not a method of preparing amines?
What is the primary reason for the water solubility of amines with fewer than 5 carbons?
What is the primary reason for the water solubility of amines with fewer than 5 carbons?
Which of the following classifications of amines has a nitrogen atom with a lone pair and three single bonds?
Which of the following classifications of amines has a nitrogen atom with a lone pair and three single bonds?
What is the relationship between the pKb value and the strength of a base in amines?
What is the relationship between the pKb value and the strength of a base in amines?
Why do small amines smell fishy?
Why do small amines smell fishy?
What is the effect of electron-donating alkyl groups on the nitrogen atom in amines?
What is the effect of electron-donating alkyl groups on the nitrogen atom in amines?
What is the trend in the strength of the base as we go from NH3 to primary amine to secondary amine?
What is the trend in the strength of the base as we go from NH3 to primary amine to secondary amine?
Why is the tertiary amine a weaker base compared to primary and secondary amines?
Why is the tertiary amine a weaker base compared to primary and secondary amines?
What is the relation between pKa and pKb of a conjugate acid and base pair?
What is the relation between pKa and pKb of a conjugate acid and base pair?
What is the effect of the F atom on the basicity of the compound in the middle and rightmost compounds?
What is the effect of the F atom on the basicity of the compound in the middle and rightmost compounds?
Why do primary and secondary amines have approximately equal strengths as bases?
Why do primary and secondary amines have approximately equal strengths as bases?
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