Explain why a limited oxygen supply gives carbon monoxide or soot instead of carbon dioxide, write balanced equations for the incomplete combustion of hydrocarbons and alcohols, and describe the hazards of carbon monoxide.
Tę umiejętność sprawdzają 4 zadania wzorowane na arkuszach IB z lat 2024–2026.
Chemia IBPaper 2, maj 2026, TZ3wzorowane5 pktotwarteśrednie (szac.)
Ethanol can be used as a fuel. (i) Calculate the enthalpy change for the combustion of ethanol using section 12 of the data booklet. C2H5OH(g) + 3 O2(g) → 2 CO2(g) + 3 H2O(g) (ii) The enthalpy of formation of ethanol is defined from its elements. State,…
Chemia IBPaper 1A, maj 2026, TZ2wzorowane1 pktzamkniętełatwe (szac.)
Ethane burns in a limited supply of oxygen. Which product is formed by incomplete combustion but not by complete combustion? A. CO2 B. CO C. H2O D. SO2
Chemia IBPaper 1A, listopad 2025, TZ3wzorowane1 pktzamkniętełatwe (szac.)
Which set of products can be formed by the incomplete combustion of butane, C4H10? A. C, CO and H2O B. CO2 and H2O only C. CO and H2 only D. C and H2 only
Chemia IBPaper 3, maj 2024, TZ1wzorowane2 pktotwarteśrednie (szac.)
Natural gas, which is mainly methane, and coal, which is mainly carbon, are both burned in power stations. Outline why burning natural gas has a lower environmental impact than burning coal.