Question detail
What does the chemical shift in a carbon-13 NMR spectrum indicate about a carbon atom?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Nuclear magnetic resonance spectroscopy (A-level only)
Question
- A. The electronic environment of the carbon atom
- B. The number of hydrogen atoms attached to the carbon
- C. The type of functional group attached to the carbon
- D. The hybridization of the carbon atom
Answer
The electronic environment of the carbon atom
Explanation
The correct option is The electronic environment of the carbon atom. The electronic environment of the carbon atom is the best answer because it directly supports the AQA A-Level Chemistry objective to use carbon-13 NMR spectra to identify carbon environments. This reasoning is anchored to NMR spectroscopy (A-level only) in Nuclear magnetic resonance spectroscopy (A-level only), and it separates NMR from similar A-Level ideas rather than relying on a vague recall statement. Other options are weaker if they use the wrong evidence, calculation, mechanism, observation, unit, or conclusion for this subtopic.
Common mistake
Misidentifying Carbon Environments
Students often confuse the chemical shifts of different carbon environments, leading to incorrect identification of carbon types in a molecule.
To fix this, refer to a reliable table of carbon-13 NMR chemical shifts. Identify the environment by matching the chemical shift value to the corresponding carbon type, ensuring to consider the molecular structure.
Related flashcards
Flashcard 1 of 5
Related practice questions
Question 1 of 5
Choose an answer, get feedback, then move sideways through the set.