Unit A23 5.5 Transition metals

Question 1

5.5.8 - Use ethylene diamine, phenylamine and aqueous ammonia to demonstrate ligand replacement based on lone pair availability

Answer 1

• Place 2 cm3 of a metal ion solution in a boiling tube.
• Add 1 cm3 of phenylamine, shake and record observations.
• Add 1 cm3 of aqueous ammonia solution, shake and record observations.
• Add 1 cm3 of ethylene diamine, shake and record observations.

Question 2

5.5.9 - Demonstrate the relative strengths of ligands using hydrated copper(II) ions and hydrochloric acid

Answer 2

• Add 2 cm3 of a hexaaquacopper(II) ion solution to a test tube
• Add 2 cm3 of concentrated hydrochloric acid and record observations.