A-LevelChemistryGroup 17Feb/Mar 2022Paper 1 Q221 Mark
Which statement relating to the elements in Group 17 and their compounds is correct?
ABromine will reduce KI to form iodine.
BIodide ions react to form a white precipitate when added to silver nitrate solution.
CBromide ions react to form a white precipitate when added to silver nitrate solution.
DChlorine reacts with hydrogen to form a colourless gas.
✓ Correct Answer
The correct answer is D. This question tests the candidate's understanding of group 17 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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