Quelpr
3 marksAcidic and Basic Character of Organic Compounds

CAPE Chemistry Unit 2 · 2005 · Paper 2 · Question 7(a)(ii)

Characteristic properties of transition metals and their complexes.

Explain why the gradual addition of concentrated sodium chloride solution to aqueous copper (II) sulphate produces a green solution, which changes to yellow upon further addition.

The mark scheme is shown once you've answered.

Practise this question

Other parts of this question

  1. 7(a)(i)Explain why anhydrous copper (II) sulphate is a white solid that gradually turns blue upon dropwise addition of water, and dissolves to form a blue solution…[4 marks]
  2. 7(b)(i)Determine the formula of the complex ion X.[4 marks]
  3. 7(b)(ii)Draw the shape of the complex ion X.[1 mark]
  4. 7(c)(i)Explain why the oxygen-carrying capacity of haemoglobin is reduced in the presence of carbon monoxide.[4 marks]
  5. 7(c)(ii)Account for why manganate(VII) ions (MnO4-) and dichromate(VI) ions (Cr2O7 2-) are powerful oxidizing agents, using E0 values where appropriate.[4 marks]

More practice: the rest of this paper · more Acidic and Basic Character of Organic Compounds questions · all CAPE Chemistry Unit 2 past papers