QuestionQuestionConceptConceptDocumentDocument

22. Analytical techniques

Start with Concept to understand a topic, then use Question Bank to check what you know.

2 topics · 7 learning objectives

Your progress

Sign in to see your mastery and mistakes.

  1. 22.1 Infrared spectroscopy

    1. 22.1.1

      • Analyse an infrared spectrum of a simple molecule to identify functional groups (see the Data section for the functional groups required)

  2. 22.2 Mass spectrometry

    1. • Analyse mass spectra in terms of m/e values and isotopic abundances (knowledge of the working of the mass spectrometer is not required)

    2. • Calculate the relative atomic mass of an element given the relative abundances of its isotopes, or its mass spectrum

    3. • Deduce the molecular mass of an organic molecule from the molecular ion peak in a mass spectrum

    4. • Suggest the identity of molecules formed by simple fragmentation in a given mass spectrum

    5. • Deduce the number of carbon atoms, n, in a compound using the [M + 1]+ peak and the formula n = 100 × abundance of [M + 1]+ ion 1.1 × abundance of M+ ion

    6. • Deduce the presence of bromine and chlorine atoms in a compound using the [M + 2] + peak