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Inorganic Chemistry (PI2.2 Chemistry of the d-block transition metals)

3 dot points across 3 inquiry questions. Click any dot point for a focused answer with worked past exam questions where available.

What makes the transition metals distinctive, and how do their complexes and colours arise?

The characteristic properties of transition metals, variable oxidation states, complex-ion formation and shapes, coloured ions and the d-d transition, ligand substitution, and catalysis.
An Eduqas A-Level Chemistry PI2.2 answer on the characteristic properties of transition metals, variable oxidation states, complex ions and their shapes, the origin of colour, ligand substitution and catalysis.
12 min answer →

How do the properties of Group 3 to Group 7 elements vary, and what are the trends of the halogens?

Periodic trends in the p-block, the chemistry of Group 7 (the halogens) including their reactions as oxidising agents, the reactions of halide ions, and qualitative tests for anions.
An Eduqas A-Level Chemistry PI2.1 answer on p-block trends, the halogens as oxidising agents, the reactions of halide ions, disproportionation of chlorine, and qualitative anion tests.
11 min answer →

How are redox titrations carried out and used to determine the amount of a substance?

Redox titrations with manganate(VII) and thiosulfate-iodine, constructing redox equations from half-equations, disproportionation, and using titration data to calculate amounts and concentrations.
An Eduqas A-Level Chemistry PI1.2 answer on redox titrations with manganate(VII) and iodine-thiosulfate, building redox equations from half-equations, disproportionation, and redox titration calculations.
11 min answer →