Practice HL: Using Combined Spectroscopic Data to Deduce Structures - 12.4 | Chapter 12: Spectroscopic Identification of Organic Compounds | IB Grade 12-Chemistry
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12.4 - HL: Using Combined Spectroscopic Data to Deduce Structures

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

Define what the molecular ion peak represents in mass spectrometry.

💡 Hint: Think about how mass spectrometry provides molecular information.

Question 2

Easy

What does the Index of Hydrogen Deficiency (IHD) tell us?

💡 Hint: Consider what unsaturation means in organic compounds.

Practice 4 more questions and get performance evaluation

Interactive Quizzes

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

Question 1

What is the primary use of mass spectrometry in organic chemistry?

  • To determine molecular mass
  • To identify color
  • To measure electric charge

💡 Hint: Consider how mass spectrometry provides molecular-level information.

Question 2

Is the following statement true or false? 'Infrared spectroscopy can identify the exact structure of a compound without additional techniques.'

  • True
  • False

💡 Hint: Reflect on the limits of each spectroscopic technique.

Solve and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

A compound has the empirical formula C₃H₇ and an M⁺ peak of 86 g/mol. Calculate its molecular formula and discuss possible structures.

💡 Hint: Use the ratio from the empirical formula to find n and multiply accordingly.

Question 2

Given an IHD of 2, suggest potential structure options for the molecule, considering possible functional groups.

💡 Hint: Reflect on how multiple unsaturation scenarios can fit an IHD of 2.

Challenge and get performance evaluation