0654.C3.1.06 — Deduce the symbol equation with state symbols for a chemical reaction, given relevant information: past paper questions
Real questions on 0654.c3.1.06 — deduce the symbol equation with state symbols for a chemical reaction, given relevant information
The newest 9 of 9 written questions. Open one to see it on the real paper.
- 0973/41 · October/November 2024 · Q2e[4]
Sulfur is used in the manufacture of sulfuric acid in the Contact Process. Complete and balance the equations for the Contact Process. S + O 2 SO 2 2SO 2 + + SO SO 3 H 2 S 2 O 7 H S O + 2H SO
See it on the paper → - 0973/41 · October/November 2024 · Q8a[2]
Construct the balanced symbol equation for this reaction.
See it on the paper → - 0973/42 · May/June 2024 · Q8b[2]
Ethene, C 2 H 4 , reacts with hydrogen to make an alkane. Write the balanced symbol equation for this reaction.
See it on the paper → - 0973/42 · May/June 2024 · Q8e[1]
Ethanol can also be made from ethene in an addition reaction. Complete the symbol equation for this reaction. C 2 H 4 + ……… C 2 H 5 OH
See it on the paper → - 0973/41 · October/November 2022 · Q2c[2]
Butane, C 4 H 10 , burns completely in air. Carbon dioxide and water are made. Construct the balanced symbol equation for this reaction.
See it on the paper → - 0973/41 · October/November 2020 · Q13b(i)[2]
Write a balanced symbol equation for the formation of ammonia in the Haber process.
See it on the paper → - 0973/32 · May/June 2020 · Q8b(ii)[1]
Balance the equation for the combustion of hydrogen. H + O H O
See it on the paper → - 0973/31 · May/June 2019 · Q2c(i)[1]
Balance the symbol equation for this reaction. Cl 2 + HCl H 2
See it on the paper → - 0973/42 · May/June 2019 · Q11a[1]
In stage 2, sulfur dioxide reacts with oxygen to make sulfur trioxide. The equation for this reaction is 2SO 2 + O 2 State the meaning of the 2SO 3 symbol.
See it on the paper →
What examiners said
A correct balanced equation for the formation of ammonia was sometimes provided. Many candidates used formulae such as H or H3. (ii)(iii) A suitable pressure for use in the Haber reaction chamber was suggested sometimes. Correct units needed to be included. The purpose of the catalyst was generally explained well. While most knew that a higher temperature increases the rate of reaction, few appre...
— Examiner report, October/November 2020, 0973/41 Q13(b)(i) (Cambridge)
Some candidates correctly balanced the equation. Many others attempted to change the formula of hydrogen chloride.
— Examiner report, May/June 2019, 0973/31 Q2(c)(i) (Cambridge)
This question was correctly answered by many of the candidates.
— Examiner report, May/June 2019, 0973/42 Q11(a) (Cambridge)
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