plumiBalanced full and ionic equations: Edexcel International A Level Chemistry questions
Edexcel International A Level Chemistry past-paper questions on 1.1.3 Balanced full and ionic equations, 2019–2025, with mark schemes and examiner’s reports where available.
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Q20(b)(ii)
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All 47 questions on Balanced full and ionic equations, as a list
- June 2025, AS Unit 1, Q20(b)(ii) (2 marks): Write a balanced equation for the complete combustion of dodecane, C12H26 . Include state symbols. (2)
- January 2025, Unit 4, Q20(c)(i) (2 marks): Complete the equation for the reaction of one mole of sucrose with nitric acid. (2) HO O C12H22O11 36HNO3 + NO2 + H2O + O OH
- October 2024, AS Unit 1, Q5 (1 mark): Diphosphane, P2H4 , reacts spontaneously with oxygen. xP2H4 + yO2 → P4O10 + zH2O The equation for this reaction is balanced when A x = 1 y = 6 z = 2 B x = 2 y =
- June 2024, AS Unit 1, Q14 (1 mark): Which is the simplest ionic equation for an alkali reacting with an acid? A 2H+(aq) + 2OH–(aq) → 2H2O(l) B H+(aq) + OH–(aq) → H2O(aq) C H+(aq) + OH–(aq) → H2O(l
- June 2024, AS Unit 1, Q15(a) (2 marks): Silver chloride decomposes in light. This reaction was used in the first photographic plates. Write an equation for this decomposition. Include state symbols. (
- June 2024, AS Unit 1, Q15(b)(ii) (2 marks): Write an equation for this displacement reaction. Include state symbols. (2)
- June 2024, AS Unit 1, Q18(b)(ii) (2 marks): The acidic derivative of tartaric acid can be represented by the formula H+K+A2–. Write the equation for the neutralisation of sodium hydrogencarbonate by H+K+A
- June 2024, AS Unit 2, Q18(b)(v) (2 marks): Write an equation for each of the two steps in the formation of chlorine dioxide, using your answers in (b). State symbols are not required. (2)
- June 2024, AS Unit 3, Q2(i) (1 mark): A small quantity of water is removed by the drying agent anhydrous calcium chloride. Complete the equation by adding the formula of the product including its st
- June 2024, Unit 4, Q15(b)(i) (1 mark): Write an equation for this reaction. State symbols are not required. (1)
- June 2024 (R), AS Unit 2, Q22(c)(i) (1 mark): Give the equation for this reaction. State symbols are not required. (1)
- June 2024 (R), AS Unit 2, Q22(c)(ii) (1 mark): Name the type of reaction occurring. (1)
- June 2024 (R), AS Unit 3, Q5(b)(i) (2 marks): Write an equation to show the reaction taking place in Step B. Include state symbols in your answer. (2)
- January 2024, AS Unit 1, Q20(d)(i) (2 marks): Write an equation for the reaction that occurs. Include state symbols in your answer. (2)
- January 2024, Unit 6, Q3(b)(ii) (1 mark): Write the equation for the generation of sulfur dioxide from the reaction between sodium sulfate(IV) (Na2SO3) and hydrochloric acid. State symbols are not requi
- October 2023, AS Unit 1, Q21(b)(ii) (1 mark): Write the ionic equation for the formation of basic nickel(II) carbonate from nickel(II) sulfate. State symbols are not required. 3NiSO4(aq) + Na2CO3(aq) + 4NaO
- October 2023, AS Unit 2, Q18(a)(i) (1 mark): Write an ionic equation for the neutralisation reaction between aqueous sodium hydroxide and hydrochloric acid. State symbols are not required. (1)
- October 2023, AS Unit 2, Q20(a)(i) (2 marks): Carbonate ions may be identified by their reaction with aqueous acid to produce carbon dioxide. Give the ionic equation for this reaction. Include state symbols
- June 2023, AS Unit 2, Q19(e)(i) (2 marks): Write the ionic equation for the reaction of silver(I) oxide with water. State symbols are not required. (2)
- June 2023, AS Unit 2, Q22(b)(i) (1 mark): Write the ionic equation for this reaction. State symbols are not required. (1)
- June 2023, Unit 5, Q21(c)(i) (2 marks): It is produced in the reaction between Hg(NO3)2 and ethanol. The other products of the reaction are ethanal and water. Write the equation for the reaction of on
- January 2023, AS Unit 1, Q5 (1 mark): Which is the equation for the reaction of magnesium chloride solution with sodium hydroxide solution? A Mg+(aq) + OH–(aq) → MgOH(s) B Mg2+(aq) + 2OH–(aq) → Mg(O
- January 2023, AS Unit 1, Q25(b) (1 mark): Aluminium trichloride reacts vigorously with water to produce hydrogen chloride and aluminium hydroxide, Al(OH)3. Write the equation for this reaction. State sy
- January 2023, AS Unit 2, Q22(a)(iii) (1 mark): Derive the overall equation for the production of H2 in Stage 1. State symbols are not required. (1)
- January 2023, AS Unit 2, Q22(b)(ii) (1 mark): Name the type of reaction occurring. (1)
- January 2023, AS Unit 3, Q3(b)(i) (1 mark): The unbalanced equation for the reaction between citric acid and sodium hydroxide is shown. H2CCOOH H2CCOONa HOCCOOH + NaOH → HOCCOONa + H2O H2CCOOH H2CCOONa Co
- October 2022, AS Unit 1, Q14(b)(iii) (1 mark): The barium chloride solution is acidified to prevent carbonate ions giving a false positive result. Write the ionic equation for the reaction of hydrochloric ac
- October 2022, AS Unit 2, Q23(a)(i) (1 mark): Write the equation for Step 1. State symbols are not required. (1)
- June 2022, AS Unit 1, Q3 (1 mark): When magnesium oxide reacts with dilute sulfuric acid the equation is MgO(s) + H2SO4(aq) → MgSO4(aq) + H2O(l) What is the ionic equation for the reaction? A MgO
- June 2022, AS Unit 1, Q19(a)(iii) (3 marks): Use your answers to (a)(i) and (a)(ii) to write the ionic equation for the reaction of iron with iron(III) chloride. Include state symbols. You must show your w
- January 2022, AS Unit 1, Q20(c)(i) (1 mark): Write an equation for the reaction that occurs. State symbols are not required. (1)
- October 2021, AS Unit 1, Q14(d)(i) (1 mark): Aluminium nanoparticles react with water to produce aluminium oxide and hydrogen. Complete the following equation. State symbols are not required. (1) Al + H2O
- October 2021, Unit 6, Q1(d)(i) (1 mark): Copper and zinc both react with concentrated nitric acid to form the metal nitrates, nitrogen dioxide and water. Write the balanced equation for the reaction of
- June 2021, AS Unit 2, Q19(a) (2 marks): Write an equation for the reaction. Include state symbols in your answer. (2)
- June 2021, AS Unit 2, Q22(e)(i) (1 mark): Write an equation for this reaction. State symbols are not required. (1)
- January 2021, AS Unit 1, Q20(a) (2 marks): Write an equation for the incomplete combustion of one mole of propene to form carbon dioxide, carbon monoxide, carbon and water as the only products. Include s
- January 2021, AS Unit 2, Q22(a)(i) (1 mark): Write the overall equation for the Liebig Process. State symbols are not required. (1)
- January 2021, AS Unit 3, Q1(a)(iii) (2 marks): Write an ionic equation for the reaction between solution A and solution C. Include state symbols. (2)
- October 2020, AS Unit 1, Q19(a)(i) (2 marks): Write an equation for the reaction. State symbols are not required. (2)
- October 2020, AS Unit 1, Q19(a)(ii) (1 mark): Give a name for this type of reaction. (1)
- October 2020, Unit 5, Q25(a) (1 mark): The Lanthanides The lanthanides form a series in the Periodic Table comprising the elements from lanthanum, La (Z = 57) to lutetium, Lu (Z = 71). They have impo
- June 2019, AS Unit 1, Q21(a) (1 mark): Complete the equation for this reaction by adding state symbols. (1) MgCO3( ) + 2HCl( ) o MgCl2( ) + H2O( ) + CO2( )
- June 2019, AS Unit 1, Q24(a) (1 mark): Write an equation for the decomposition of sodium azide. State symbols are not required. (1)
- June 2019, AS Unit 1, Q24(c)(ii) (1 mark): State the type of reaction taking place in reaction B. (1)
- June 2019, AS Unit 3, Q1(a) (1 mark): Write the equation for the decomposition of ammonium carbonate. State symbols are not required. (1)
- January 2019, AS Unit 1, Q17 (1 mark): Calcium reacts with dilute nitric acid to form calcium nitrate and hydrogen. Which is the balanced equation for this reaction? A Ca + 2HNO3 o Ca(NO3)2 + H2 B Ca
- January 2019, AS Unit 1, Q24(a) (2 marks): A precipitate of silver chloride is formed when silver nitrate solution reacts with sodium chloride solution. A student wrote an ionic equation for the reaction
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