Quelpr
4 marksSpectroscopic Methods of Analysis

CAPE Chemistry Unit 2 · 2010 · Paper 2 · Question 2(b)

Using the formula ν = c / λ, calculate the missing values (i) wavelength for frequency 3 x 10^13 Hz and (ii) frequency for wavelength 3.16 m, and identify the corresponding types of electromagnetic radiation (iii) and (iv) in Table 1 (c = 3.0 x 10^8 m s^-1).

This question uses a figure or table from the paper — you'll see it when you practise.

The mark scheme is shown once you've answered.

Practise this question

Other parts of this question

  1. 2(a)(i)Define the term electromagnetic radiation.[1 mark]
  2. 2(a)(ii)Define the term wavelength.[1 mark]
  3. 2(a)(iii)Define the term frequency.[1 mark]
  4. 2(c)(i)State three steps that must be followed when preparing a sample of organic compound X for UV/VIS spectroscopic analysis at 200 nm.[3 marks]
  5. 2(c)(ii)State two properties of complexing reagents that make them suitable for use in UV/VIS analysis.[2 marks]
  6. 2(d)(i)Calculate the energy absorbed by one molecule of a compound where ν = 1.5 x 10^15 s^-1 (using E = hν, where h = 6.63 x 10^-34 J s).[1 mark]
  7. 2(d)(ii)Calculate the energy absorbed by one mole of the compound.[2 marks]

More practice: the rest of this paper · more Spectroscopic Methods of Analysis questions · all CAPE Chemistry Unit 2 past papers