Introduction to Mass Spectrometry and IR Spectroscopy

Reeba·

Spectroscopy

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At a Glance

Grade Level11th Grade

SubjectSpectroscopy

Original Prompt

Provide a worksheet for analytical chemistry for AS level chemistry. use the syllabus and past paper questions of the code 9701 in CIE to tailor the material and the questions. This resource should include: 1. Mass spectrometry - basic instrumentation, peaks of isotopes of elements and calculation of relative atomic mass; peaks in organic molecules- fragmentation, base peak, molecular ion peak, M+1 peak for C13, calculation of number of carbon atoms from the relative abundance of M+ and {M+1]+...

This document provides an introduction to mass spectrometry, outlining the processes involved in ionization, acceleration, deflection, and detection of ions, which combine to produce mass spectra. It explains how to identify isotopes and calculate relative atomic mass using isotopic abundance, illustrated by a worked example using chlorine isotopes. The document also covers how to read mass spectra, including identifying M+ and M+1 peaks for carbon atoms, as well as features characteristic of halogens like chlorine and bromine. In addition to mass spectrometry, the resource discusses infrared (IR) spectroscopy, detailing characteristic absorption frequencies for various functional groups, providing insights into how to identify these groups through spectral analysis. There are practical applications and problem-solving sections that encourage learners to apply their knowledge of both techniques to deduce molecular structures from spectral data.