Practice 1H NMR Spectroscopy (Proton NMR) - 12.3.2.1 | Chapter 12: Spectroscopic Identification of Organic Compounds | IB Grade 12-Chemistry
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12.3.2.1 - 1H NMR Spectroscopy (Proton NMR)

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is the primary purpose of 1H NMR spectroscopy?

💡 Hint: Think about how chemists can deduce compounds' structures.

Question 2

Easy

What does the number of signals in a 1H NMR spectrum indicate?

💡 Hint: Remember, each unique hydrogen creates its signal!

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Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What does a higher chemical shift imply about a hydrogen's environment?

  • It is heavily shielded
  • It is deshielded
  • It indicates a saturated bond

💡 Hint: Think about what causes shifts in the spectrum.

Question 2

True or False: Integration in NMR tells us the exact number of hydrogen atoms in a molecule.

  • True
  • False

💡 Hint: Consider the meaning of integration.

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Challenge Problems

Push your limits with challenges.

Question 1

A molecule is suspected to include both an alcohol and an aromatic ring. Given its 1H NMR shows signals at 1.1 ppm (triplet), 4.2 ppm (singlet), and 7.3 ppm (multiplet), sketch a possible structure that fits these signals.

💡 Hint: Say the chemical shifts suggest specific functional groups.

Question 2

If you have a compound with a molecular formula of C6H12 and a 1H NMR spectrum showing 3 signals at 0.9 ppm (3H), 1.3 ppm (2H), and 5.1 ppm (1H), propose a structure considering the data.

💡 Hint: Verify against molecular formula against distinct signals.

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