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Mass Spectroscopy · CAPE Chemistry Unit 2

30 past-paper questions on Mass Spectroscopy, part of Analytical Methods and Separation Techniques, from every CAPE Chemistry Unit 2 paper on Quelpr.

Practise Mass Spectroscopy
  1. 5(a)(i)4 marks· CAPE Chemistry Unit 2 · 2008 (T&T) · Paper 2Identify the parts of the mass spectrometer numbered (2), (3), (4), and (5) in Figure 2.
  2. 5(a)(ii)2 marks· CAPE Chemistry Unit 2 · 2008 (T&T) · Paper 2What is the purpose of the heated filament, (1)?
  3. 5(b)2 marks· CAPE Chemistry Unit 2 · 2008 (T&T) · Paper 2Data from the mass spectrum of bromine gives mass numbers 79 (50.5%) and 81 (49.5%). Calculate to 3 significant figures the relative atomic mass of bromine.
  4. 5(c)(i)4 marks· CAPE Chemistry Unit 2 · 2008 (T&T) · Paper 2Sketch the mass spectrum of bromine vapour in the m/e region indicated in Figure 3 (m/e 156 to 163).
  5. 5(c)(ii)3 marks· CAPE Chemistry Unit 2 · 2008 (T&T) · Paper 2What is the origin of EACH of the THREE peaks in your spectrum?
  6. 5(a)3 marks· CAPE Chemistry Unit 2 · 2010 · Paper 2State three molecular characteristics that can be determined from mass spectral data.
  7. 5(b)(i)2 marks· CAPE Chemistry Unit 2 · 2010 · Paper 2Determine the m/e ratio of the M and M + 1 peaks.
  8. 5(b)(ii)3 marks· CAPE Chemistry Unit 2 · 2010 · Paper 2Deduce the formula of the fragment ions at m/e ratios: 43, 63, and 65.
  9. 5(b)(iii)3 marks· CAPE Chemistry Unit 2 · 2010 · Paper 2Deduce the formula of the M and M + 1 molecular ion species and provide the systematic name of the compound.
  10. 5(c)2 marks· CAPE Chemistry Unit 2 · 2010 · Paper 2Given chlorine has two isotopes of relative atomic masses 34.97 (75.77% abundance) and 36.96 (24.23% abundance), calculate the average relative atomic mass of naturally occurring chlorine.
  11. Q211 mark · multiple choice· CAPE Chemistry Unit 2 · 2012 · Paper 1Which of the following analytical techniques is considered MOST specific for identification purposes?
  12. Q241 mark · multiple choice· CAPE Chemistry Unit 2 · 2014 · Paper 1Which of the following analytical techniques is considered MOST specific for identification purposes?
  13. 5(a)(i)2 marks· CAPE Chemistry Unit 2 · 2014 · Paper 2Describe how the electron beam is used in the analysis of an organic compound.
  14. 5(a)(ii)2 marks· CAPE Chemistry Unit 2 · 2014 · Paper 2Describe how the magnetic field is used in the analysis of an organic compound.
  15. 5(a)(iii)2 marks· CAPE Chemistry Unit 2 · 2014 · Paper 2Describe how the recorder is used in the analysis of an organic compound.
  16. 5(b)2 marks· CAPE Chemistry Unit 2 · 2014 · Paper 2Explain the importance of the (M + 1) peak in mass spectra.
  17. 5(c)(i)1 mark· CAPE Chemistry Unit 2 · 2014 · Paper 2Deduce the m/z ratio of the molecular ion.
  18. 5(c)(ii)1 mark· CAPE Chemistry Unit 2 · 2014 · Paper 2Deduce the m/z ratio of the base peak.
  19. 5(c)(iii)3 marks· CAPE Chemistry Unit 2 · 2014 · Paper 2Deduce the formulae of the ion fragments of m/z ratios 15, 29 and 43.
  20. 5(c)(iv)1 mark· CAPE Chemistry Unit 2 · 2014 · Paper 2Deduce the structural formula of Compound X.
  21. Q251 mark · multiple choice· CAPE Chemistry Unit 2 · 2015 · Paper 1Which of the following processes occur in a mass spectrometer before isotopes can be detected? I. Acceleration II. Amplification III. Deflection
  22. Q241 mark · multiple choice· CAPE Chemistry Unit 2 · 2016 · Paper 1Which of the following analytical techniques is considered MOST specific for identification purposes?
  23. Q271 mark · multiple choice· CAPE Chemistry Unit 2 · 2016 · Paper 1How many carbon atoms has Compound R?
  24. Q251 mark · multiple choice· CAPE Chemistry Unit 2 · 2017 · Paper 1Which of the following processes occur in a mass spectrometer before isotopes can be detected? I. Acceleration II. Amplification III. Deflection
  25. Q261 mark · multiple choice· CAPE Chemistry Unit 2 · 2017 · Paper 1In the mass spectrometer a molecular ion is formed from a compound by the
  26. 2(a)4 marks· Chemistry · Unit 2 Q2 2(a)Explain how a mass spectrometer works to obtain a mass spectrum of a molecule.
  27. 2(b)(i)2 marks· Chemistry · Unit 2 Q2 2(b)(i)State the m/z ratio of the M⁺ and M+2 peak?
  28. 2(b)(ii)3 marks· Chemistry · Unit 2 Q2 2(b)(ii)Deduce the formula of the fragments at m/z ratio of 43, 107 and 109.
  29. 2(b)(iii)3 marks· Chemistry · Unit 2 Q2 2(b)(iii)Determine the formula of the M⁺ and M+2 molecular ion species and name the haloalkane.
  30. 2(e)4 marks· Chemistry · Unit 2 Q2 2(e)List the FOUR main steps involved in mass spectrometry.

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