Quelpr
2 marksInfrared Spectroscopy

CAPE Chemistry Unit 2 · 2016 · Paper 2 · Question 2(c)(i)

The IR spectrum of organic compound Y has major absorption peaks at 3350-3500 cm⁻¹ and 1680-1800 cm⁻¹. Y has a relative molecular mass of 75 and forms a neutral aqueous solution.

Identify the groups responsible for the above absorptions.

The mark scheme is shown once you've answered.

Practise this question

Other parts of this question

  1. 2(a)Explain the origin of infrared (IR) absorption by compounds.[3 marks]
  2. 2(b)State the properties of compounds which absorb IR radiation.[2 marks]
  3. 2(c)(ii)State the name of Compound Y and draw its displayed formula.[3 marks]
  4. 2(d)Describe the steps taken in the preparation of a solid sample for IR analysis.[4 marks]
  5. 2(e)State ONE limitation of IR spectroscopy.[1 mark]

More practice: the rest of this paper · more Infrared Spectroscopy questions · all CAPE Chemistry Unit 2 past papers