A-LevelChemistryAtoms, molecules and stoichiometryFeb/Mar 2019Paper 1 Q21 Mark
A 3.7 g sample of copper(II) carbonate is added to 25 cm³ of 2.0 mol dm⁻³ hydrochloric acid. Which volume of gas is produced under room conditions?
A0.60 dm³
B0.72 dm³
C1.20 dm³
D2.40 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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