From Mock A · Paper 1: Inorganic and Physical Chemistry
2.34 marks
0.640 g of a gas occupies 250 cm³ at 100 kPa and 300 K. Calculate its relative molecular mass and suggest its identity.
From Mock A · Paper 1: Inorganic and Physical Chemistry
2.42 marks
In a reaction the theoretical yield was 4.80 g and the actual yield 3.36 g. Calculate the percentage yield and give one reason why it is less than 100%.
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 2: Organic and Physical Chemistry
4.24 marks
Complete combustion of 0.440 g of a hydrocarbon produced 1.32 g of CO₂ and 0.72 g of H₂O. Deduce its empirical formula.
From Mock A · Paper 3: Practical skills, all content and multiple choice
1.33 marks
10.0 g of cyclohexanol (Mᵣ 100) gave 5.74 g of cyclohexene (Mᵣ 82). Calculate the percentage yield.
From Mock A · Paper 3: Practical skills, all content and multiple choice
61 mark
How many moles of oxygen atoms are in 0.25 mol of CuSO₄·5H₂O?
From Mock B · Paper 1: Inorganic and Physical Chemistry
2.13 marks
A compound contains 40.0% carbon, 6.7% hydrogen and 53.3% oxygen by mass. Calculate its empirical formula.
From Mock B · Paper 1: Inorganic and Physical Chemistry
2.24 marks
25.0 cm³ of 0.100 mol dm⁻³ NaOH was neutralised by 21.40 cm³ of sulfuric acid. Calculate the concentration of the sulfuric acid.
From Mock B · Paper 1: Inorganic and Physical Chemistry
2.32 marks
Calculate the percentage atom economy for making ethanol by fermentation: C₆H₁₂O₆ → 2C₂H₅OH + 2CO₂. (Mr: glucose 180.0, ethanol 46.0)
From Mock B · Paper 2: Organic and Physical Chemistry
15.42 marks
Calculate the volume, in cm³, occupied by 0.0100 mol of CO₂ at 100 kPa and 298 K.
From Mock B · Paper 3: Practical skills, all content and multiple choice
1.13 marks
Describe how to make 250 cm³ of a standard solution of sodium carbonate from a weighed solid.
From Mock B · Paper 3: Practical skills, all content and multiple choice
4.23 marks
5.00 g of cyclohexanol (Mr 100.0) gave 2.87 g of cyclohexene (Mr 82.0). Calculate the percentage yield.
From Mock B · Paper 3: Practical skills, all content and multiple choice
111 mark
How many molecules are in 0.500 mol of water?
From Mock C · Paper 1: Inorganic and Physical Chemistry
2.14 marks
0.300 g of an impure sample of calcium carbonate (Mr 100.1) reacted with 36.0 cm³ of 0.150 mol dm⁻³ HCl. Calculate the percentage purity of the sample.
From Mock C · Paper 1: Inorganic and Physical Chemistry
2.23 marks
Calculate the volume, in dm³, of 0.250 mol of gas at 298 K and 100 kPa.
From Mock C · Paper 2: Organic and Physical Chemistry
15.33 marks
1.20 mol of a gas is heated to 573 K in a 0.0566 m³ container. Calculate the pressure in kPa.
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
111 mark
What mass of NaOH (Mr 40.0) is needed to make 250 cm³ of 0.200 mol dm⁻³ solution?
Score 0 / 54 · 0 of 18 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.
Amount of substance Exam Questions: AQA A-Level Chemistry | Plasmo