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What is the pKa of the carboxyl group in amino acids?

Practice Questions

Q1
What is the pKa of the carboxyl group in amino acids?
  1. Around 2
  2. Around 7
  3. Around 9
  4. Around 12

Questions & Step-by-Step Solutions

What is the pKa of the carboxyl group in amino acids?
  • Step 1: Understand what a carboxyl group is. It is a functional group (-COOH) found in amino acids.
  • Step 2: Know that the pKa value indicates the strength of an acid. A lower pKa means a stronger acid.
  • Step 3: Recognize that in amino acids, the carboxyl group is acidic and can donate a proton (H+).
  • Step 4: Learn that the typical pKa value for the carboxyl group in amino acids is around 2.
  • Step 5: Conclude that this low pKa value shows that the carboxyl group is a strong acid in the context of amino acids.
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