A-LevelChemistryAtoms, molecules and stoichiometryFeb/Mar 2019Paper 1 Q151 Mark
When calcium nitrate thermally decomposes, oxygen is one of the products. Which volume of oxygen is produced under room conditions when 0.50 mol of calcium nitrate thermally decomposes?
A6.0 dm³
B12.0 dm³
C18.0 dm³
D30.0 dm³
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The correct answer is A. This question tests the candidate's understanding of atoms, molecules and stoichiometry within the Chemistrysyllabus. The examiner's mark scheme requires...
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Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
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