Lesson 5.3.2

5.3.2 Ionic equations, observations and hazards Quiz: Pearson Edexcel Chemistry, Unit 5

20 questions

Written by Revision Ninja · Last reviewed 11 October 2026

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Lesson 5.3.2, Ionic equations, observations and hazards: 20 multiple choice questions for the Pearson Edexcel Chemistry (9CH0), Unit 5: Formulae, Equations and Amounts of Substance, written with Revision Ninja.

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The 20 questions

  1. In the reaction NaCl(aq) + AgNO3(aq) -> AgCl(s) + NaNO3(aq), which species are spectator ions?

    • Na+(aq) and NO3-(aq)
    • Na+(aq) and Cl-(aq)
    • AgCl(s) and NaNO3(aq)
    • Ag+(aq) and Cl-(aq)

  2. Which is the correct ionic equation for the precipitation of silver chloride from aqueous silver ions and aqueous chloride ions?

    • Ag(s) + Cl2(g) -> AgCl(s)
    • Ag+(aq) + Cl-(aq) -> AgCl(s)
    • Ag+(aq) + Cl-(s) -> AgCl(s)
    • Ag+(aq) + Cl-(aq) -> AgCl(aq)

  3. What is the ionic equation for the neutralisation of hydrochloric acid by sodium hydroxide solution, including state symbols?

    • H+(aq) + OH-(aq) -> H2O(l)
    • H+(aq) + Cl-(aq) -> HCl(aq)
    • Na+(aq) + OH-(aq) -> NaOH(s)
    • H2(g) + O2(g) -> H2O(l)

  4. What is observed when dilute hydrochloric acid is added to solid sodium carbonate?

    • White precipitate
    • Pungent smell
    • Effervescence
    • Blue solution

  5. What is observed when acidified barium chloride solution is added to aqueous sulfate ions?

    • White precipitate
    • Yellow solution
    • Effervescence
    • Brown precipitate

  6. A sample is warmed with sodium hydroxide solution and a gas is produced that turns damp red litmus paper blue. Which ion is most likely present?

    • Chloride, Cl-
    • Sulfate, SO4 2-
    • Carbonate, CO3 2-
    • Ammonium, NH4+

  7. What heating apparatus should be used to heat a flammable organic liquid safely?

    • Bunsen burner
    • Direct flame
    • Spirit burner
    • Water bath

  8. What mass of silver chloride (Mr = 143.5) is precipitated when excess chloride ions react with 0.0200 mol of silver ions?

    • 2.87 g
    • 1.44 g
    • 0.287 g
    • 28.7 g

  9. How many moles of hydrochloric acid are present in 25.0 cm3 of a 0.200 mol dm-3 solution?

    • 0.00125 mol
    • 0.0500 mol
    • 0.00500 mol
    • 0.0200 mol

  10. What mass of calcium carbonate (Mr = 100.1) reacts completely with 50.0 cm3 of 0.500 mol dm-3 hydrochloric acid? CaCO3 + 2HCl -> CaCl2 + H2O + CO2

    • 0.125 g
    • 2.50 g
    • 0.625 g
    • 1.25 g

  11. A reaction should give 5.00 g of product but 3.80 g is collected. What is the percentage yield?

    • 76%
    • 132%
    • 13%
    • 24%

  12. Calculate the atom economy for making ethene by the reaction C2H5OH -> C2H4 + H2O. (Mr: C2H5OH = 46.0, C2H4 = 28.0, H2O = 18.0)

    • 100%
    • 39%
    • 28%
    • 61%

  13. A burette reading has an uncertainty of +/- 0.05 cm3. A titre uses two readings and is 20.00 cm3. What is the percentage uncertainty in the titre?

    • 0.05%
    • 0.5%
    • 5%
    • 0.25%

  14. Which change reduces the percentage uncertainty in a titration burette reading?

    • Increase titre volume
    • Use smaller flask
    • Decrease titre volume
    • Use lower concentration

  15. What colour change is seen in solution when zinc is added to copper(II) sulfate?

    • Colourless to blue
    • Blue to colourless
    • Green to colourless
    • Blue to green

  16. Which is the correct ionic equation for magnesium reacting with dilute hydrochloric acid?

    • Mg2+(aq) + 2OH-(aq) -> Mg(OH)2(s)
    • Mg(s) + 2HCl(aq) -> Mg2+(aq) + H2(g)
    • Mg(s) + 2H+(aq) -> Mg2+(aq) + H2(g)
    • Mg(s) + 2Cl-(aq) -> MgCl2(aq)

  17. 25.0 cm3 of 0.100 mol dm-3 lead(II) nitrate is added to excess sodium chloride solution. What mass of lead(II) chloride (Mr = 278.2) precipitates?

    • 1.39 g
    • 0.696 g
    • 0.0278 g
    • 0.348 g

  18. 25.0 cm3 of 2.00 mol dm-3 hydrochloric acid reacts with excess magnesium. What volume of hydrogen gas is produced at room conditions, where molar volume is 24.0 dm3 mol-1?

    • 300 cm3
    • 24 cm3
    • 600 cm3
    • 1200 cm3

  19. Which indicator is suitable for the titration of a strong acid with a weak base?

    • Phenolphthalein
    • Universal indicator
    • Litmus paper
    • Methyl orange

  20. Which species act as spectator ions when aqueous calcium chloride reacts with aqueous sodium carbonate?

    • Ca2+ and Cl-
    • Na+ and CO3 2-
    • Na+ and Cl-
    • Ca2+ and CO3 2-

All Pearson Edexcel Chemistry quizzes