A-LevelChemistryChemical energeticsMay/June 2012Paper 1 Q121 Mark
Red lead oxide, Pb3O4, is used in metal priming paints. It can be made by heating PbO in air. 6PbO(s) + O2(g) → 2Pb3O4(s) Which two values are needed to calculate the enthalpy change for this reaction?
Aenthalpy change of atomisation of O2 and enthalpy change of formation of Pb3O4
Benthalpy change of formation of O2 and enthalpy change of formation of Pb3O4
Centhalpy change of formation of PbO and enthalpy change of atomisation of O2
Denthalpy change of formation of PbO and enthalpy change of formation of Pb3O4
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The correct answer is D. This question tests the candidate's understanding of chemical energetics within the Chemistrysyllabus. The examiner's mark scheme requires...
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