A-LevelChemistryGroup 17Oct/Nov 2014Paper 1 Q161 Mark
Chlorine gas reacts with cold aqueous sodium hydroxide. It can also react with hot aqueous sodium hydroxide. What are the oxidation numbers of chlorine in the products of these reactions? [Table with columns: cold aqueous sodium hydroxide, hot aqueous sodium hydroxide]
A-1, +1 -1, +5
B-1, +1 +1, +6
C-1, +2 -1, +5
D-1, +2 +1, +6
✓ Correct Answer
The correct answer is A. 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...
🔒
Unlock the Examiner's Answer
Sign up for free to reveal the correct answer, the official mark scheme breakdown, and the examiner trap analysis for this question.
Sign Up Free to Unlock →Join thousands of Cambridge students already using Oracle Prep