General characteristic chemical properties of the first set of transition elements, titanium to copper past paper questions

Chemistry 9701 · Chemistry of transition elements. 1 describe and explain the reactions of transition elements with ligands to form complexes, including the complexes of copper(II) and cobalt(II) ions with water and ammonia molecules and hydroxide and chloride ions 2 define the term ligand as a species that contains a lone pair of electrons that forms a dative covalent bond to a central metal atom / ion 3 understand and use the terms: (a) monodentate ligand including as examples H2O, NH3, Cl – and CN– (b) bidentate ligand including as examples 1,2-diaminoethane, en, H2NCH2CH2NH2 and the ethanedioate ion, C2O4 2– (c) polydentate ligand including as an example EDTA4– 4 define the term complex as a molecule or ion formed by a central metal atom / ion surrounded by one or more ligands 5 describe the geometry (shape and bond angles) of transition element complexes which are linear, square planar, tetrahedral or octahedral 6 (a) state what is meant by coordination number (b) predict the formula and charge of a complex ion, given the metal ion, its charge or oxidation state, the ligand and its coordination number or geometry 7 explain qualitatively that ligand exchange can occur, including the complexes of copper(II) ions and cobalt(II) ions with water and ammonia molecules and hydroxide and chloride ions 8 predict, using E ⦵ values, the feasibility of redox reactions involving transition elements and their ions 9 describe the reactions of, and perform calculations involving: (a) MnO4 – / C2O4 2– in acid solution given suitable data (b) MnO4 – / Fe2+ in acid solution given suitable data (c) Cu2+ / I– given suitable data 10 perform calculations involving other redox systems given suitable data

In Cambridge A Level Chemistry 9701, General characteristic chemical properties of the first set of transition elements, titanium to copper came up in 2 of the 139 papers on Paperstreak, for about 1 marks a paper when it does. It last came up in February/March 2019.

2 questions, newest first

9701/12/F/M/19 Question 10 · 1 mark
9701/23/M/J/16 Question 1 part (b(ii)) · 1 mark

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