A-LevelChemistryEquilibriaFeb/Mar 2016Paper 1 Q171 Mark
Ammonium sulfate, (NH₄)₂SO₄, and ammonium nitrate, NH₄NO₃, are used as fertilisers. These salts have different percentages by mass of nitrogen. They have the same effect as each other on the pH of neutral soil. Which row is correct?
Aammonium nitrate, decrease
Bammonium nitrate, increase
Cammonium sulfate, decrease
Dammonium sulfate, increase
✓ Correct Answer
The correct answer is A. This question tests the candidate's understanding of equilibria 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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