QSAR Chapter 18: Hydrophobicity of Substituents
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Questions and Answers

What is the measure of a substituent's hydrophobicity relative to hydrogen?

  • log P
  • P
  • QSAR
  • π (correct)

What is the purpose of QSAR equation?

  • To calculate the log P value of a molecule
  • To identify regions of a molecule that interact with hydrophobic regions in the binding site (correct)
  • To determine the importance of a molecule's overall hydrophobicity
  • To measure the overall hydrophobicity of a molecule

What is the value of π for the substituent CH3 in aliphatic substituents?

  • 0.50 (correct)
  • 1.68
  • 0.52
  • -1.16

What does a positive value of π imply about a substituent?

<p>The substituent is more hydrophobic than hydrogen (C)</p> Signup and view all the answers

How is the logarithmic value of the partition coefficient (log P) related to π?

<p>log P is calculated using π values (B)</p> Signup and view all the answers

What is the role of log P in a QSAR equation?

<p>It measures the importance of a molecule's overall hydrophobicity (D)</p> Signup and view all the answers

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