Chapter 4 Flashcards
What is the pKa of a carboxylic acid functional group?
Around 4-5
What is the pKa of an amine functional group?
Around 9-11
What is the pKa of a phenol functional group?
Around 9-10
What is the pKa of an alcohol functional group?
Around 15-17
True or False: A lower pKa value indicates a stronger acid.
True
Which functional group has the lowest pKa value among carboxylic acid, amine, phenol, and alcohol?
Carboxylic acid
Which functional group has the highest pKa value among carboxylic acid, amine, phenol, and alcohol?
Alcohol
Fill in the blank: The pKa of a carboxylic acid is around ___.
4-5
Fill in the blank: The pKa of an amine is around ___.
9-11
Fill in the blank: The pKa of a phenol is around ___.
9-10
Fill in the blank: The pKa of an alcohol is around ___.
15-17
Which functional group is more acidic: carboxylic acid or alcohol?
Carboxylic acid
Which functional group is more basic: amine or alcohol?
Amine
What is the general trend in pKa values for functional groups from carboxylic acid to alcohol?
Decreases
Which functional group has a pKa value close to neutral pH?
Phenol
What is the relationship between pKa and the strength of an acid?
Inverse
In general, do functional groups with lower pKa values tend to donate or accept protons more readily?
Donate
What is the significance of knowing the pKa values of functional groups in organic chemistry?
Helps predict reactivity and behavior in chemical reactions
What can the pKa value of a functional group indicate about its stability?
Higher stability at lower pKa values
What is the pKa value of a neutral compound?
Around 7
Which functional group has a pKa value closer to that of a neutral compound: phenol or amine?
Phenol
What is the pKa of a thiol functional group?
Around 8-10
Fill in the blank: The pKa of a thiol is around ___.
8-10
Which functional group has a higher pKa value: thiol or carboxylic acid?
Thiol
