A-LevelChemistryNitrogen and sulfurOct/Nov 2017Paper 1 Q181 Mark
The reaction of nitrogen and oxygen to produce oxides of nitrogen happens at high temperatures in car engines or lightning strikes during thunderstorms. What is the main reason for these reactions requiring such high temperatures?
Athe lack of reactivity of nitrogen, due to the half-filled 2p subshell in the nitrogen atom
Bthe lack of reactivity of nitrogen, due to the strength of the bond in N2
Cthe lack of reactivity of oxygen, due to electron-electron repulsion in one of its 2p orbitals
Dthe lack of reactivity of oxygen, due to the strength of the bond in O2
✓ Correct Answer
The correct answer is B. This question tests the candidate's understanding of nitrogen and sulfur 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