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MDCAT Chemistry QUESTION #7804
Question 1

The pK_b of n-propylamine is approximately:

  • 3.24
  • 3.28✔️
  • 3.32
  • 3.35
Correct Answer Explanation

n-Propylamine is a weak base with K_b ~5×10⁻⁴, pK_b = -log(5×10⁻⁴) ≈ 3.30. Closest is 3.32? Actually standard value ~3.32. But MDCAT often uses 3.28 or 3.32. Given options, 3.32 is common.