A-LevelChemistryGroup 17May/June 2015Paper 1 Q161 Mark
The diagram shows a diaphragm cell used for the electrolysis of brine. Brine is concentrated aqueous sodium chloride. [Figure] A solution of sodium chlorate(I), commonly used as bleach, can be made by mixing which two substances?
AP and R
BP and S
CQ and R
DQ and S
✓ Correct Answer
The correct answer is B. This question tests the candidate's understanding of group 17 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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