A-LevelChemistryGroup 2Feb/Mar 2024Paper 1 Q201 Mark
Dolomite is a double carbonate, CaMg(CO₃)₂, and can be used instead of calcium carbonate for treating acidic soils. The three statements all refer to the agricultural use of these carbonates. 1 Dolomite and calcium carbonate are both less soluble than Ca(OH)₂. 2 One mole of dolomite has the same neutralising effect as one mole of calcium carbonate. 3 Dolomite and calcium carbonate both increase the pH of acidic soils. Which statements are correct?
A1 and 2 only
B1 and 3 only
C2 and 3 only
D1, 2 and 3
✓ Correct Answer
The correct answer is B. This question tests the candidate's understanding of group 2 within the Chemistrysyllabus. The examiner's mark scheme requires...
📋 Examiner Report & Trap Analysis
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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