A-Level UK (AQA, Edexcel, OCR) · Chemistry

Inorganic and physical chemistry

17 practice questions, each with the answer and an explanation.

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Random questions from this topic, one at a time. You see the answer and the explanation straight after each one.

All 17 questions

  1. How does the solubility of the Group 2 hydroxides change down the group from magnesium to barium?
  2. Why are Group 2 metals more reactive as you go down the group?
  3. Chlorine is bubbled through aqueous potassium bromide. What is observed and why?
  4. Solid sodium iodide reacts with concentrated sulfuric acid. Which product shows iodide reducing the sulfur most strongly?
  5. Dilute nitric acid and silver nitrate are added to a solution; a cream precipitate forms that dissolves in concentrated ammonia but not dilute ammonia. Which halide ion is present?
  6. Excess ammonia solution is added to aqueous copper(II) sulfate. What is the final colour and species?
  7. What is the oxidation state of iron and the coordination number in [Fe(CN)6]3-?
  8. Why are many transition metal complexes coloured?
  9. In the Haber process, why is 200 atm and 450 degrees Celsius used rather than a lower temperature?
  10. Which statement about the oxides of Period 3 is correct?
  11. How does the thermal stability of the Group 2 carbonates change down the group, and why?
  12. Why is the lattice enthalpy of magnesium oxide much more exothermic than that of sodium chloride?
  13. Using these data (kJ mol-1) for NaCl: enthalpy of formation -411, atomisation of Na +107, first ionisation energy of Na +496, atomisation of Cl +122, first electron affinity of Cl -349. What is the la…
  14. Standard entropies (J K-1 mol-1): N2 192, H2 131, NH3 193. What is the entropy change for N2 + 3H2 -> 2NH3?
  15. A current of 2.00 A passes for 30.0 minutes through copper(II) sulfate solution with inert electrodes. What mass of copper is deposited? (F = 96 500 C mol-1, Ar Cu = 63.5)
  16. What are the conditions of the standard hydrogen electrode?
  17. At 50 degrees Celsius, Kw for water is 5.5 x 10^-14 mol2 dm-6. What is the pH of pure water at this temperature?

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