From Mock A · Paper 1: Inorganic and Physical Chemistry
10.13 marks
Concentrated hydrochloric acid is added to aqueous copper(II) sulfate. Write an equation, give the colour change and the change in shape of the complex.
From Mock A · Paper 1: Inorganic and Physical Chemistry
10.23 marks
Explain, in terms of entropy, why [Cu(EDTA)]²⁻ forms readily from [Cu(H₂O)₆]²⁺.
From Mock A · Paper 1: Inorganic and Physical Chemistry
10.36 marks
6.30 g of hydrated iron(II) sulfate, FeSO₄·xH₂O, was dissolved and made up to 250 cm³. A 25.0 cm³ portion required 22.40 cm³ of 0.0200 mol dm⁻³ KMnO₄ in acidic solution.
MnO₄⁻ + 8H⁺ + 5Fe²⁺ → Mn²⁺ + 4H₂O + 5Fe³⁺
Calculate the value of x.
From Mock A · Paper 3: Practical skills, all content and multiple choice
221 mark
What is the coordination number of Co in [CoCl₄]²⁻?
From Mock B · Paper 1: Inorganic and Physical Chemistry
16.12 marks
Explain why transition metal complexes are coloured.
From Mock B · Paper 1: Inorganic and Physical Chemistry
16.26 marks
Describe how you would use aqueous sodium hydroxide and aqueous ammonia to distinguish between solutions containing Cu²⁺, Fe³⁺ and Al³⁺ ions. Include observations and equations.
From Mock B · Paper 1: Inorganic and Physical Chemistry
16.32 marks
Explain how iron acts as a heterogeneous catalyst in the Haber process.
From Mock B · Paper 3: Practical skills, all content and multiple choice
85 marks
25.0 cm³ of a solution of iron(II) ions required 18.20 cm³ of 0.0200 mol dm⁻³ acidified KMnO₄ for complete reaction. Calculate the concentration of Fe²⁺ and explain why no indicator is needed.
From Mock B · Paper 3: Practical skills, all content and multiple choice
271 mark
What is the coordination number of Co in [Co(NH₃)₆]³⁺?
From Mock C · Paper 1: Inorganic and Physical Chemistry
16.13 marks
Explain the meaning of the term ligand substitution, using [Co(H₂O)₆]²⁺ and concentrated HCl as an example, and state the colour change.
From Mock C · Paper 1: Inorganic and Physical Chemistry
16.23 marks
Explain the chelate effect using EDTA⁴⁻ and [Cu(H₂O)₆]²⁺.
From Mock C · Paper 3: Practical skills, all content and multiple choice
65 marks
Use E° values to explain why vanadium(V) ions can be reduced to vanadium(II) by zinc in acid. (VO₂⁺/VO²⁺ +1.00; VO²⁺/V³⁺ +0.34; V³⁺/V²⁺ −0.26; Zn²⁺/Zn −0.76 V) State the colours.
From Mock C · Paper 3: Practical skills, all content and multiple choice
85 marks
A 0.500 g sample containing iron was dissolved and all iron converted to Fe²⁺. It required 22.50 cm³ of 0.0180 mol dm⁻³ KMnO₄. Calculate the percentage by mass of iron. (Ar Fe = 55.8)
From Mock C · Paper 3: Practical skills, all content and multiple choice
261 mark
Which ion is colourless?
Score 0 / 46 · 0 of 14 marked
This paper is written by Plasmo in the style of the AQA A-Level Chemistry exam. It is not a past paper and is not produced or endorsed by the exam board.