A-Level ChemistryYear 2016Q10
Page 04 10. Which of the following is likely to have the lowest standard entropy at 100 ºC? A Neon B Mercury C Sulfur D Phosphorus 11. For the reaction 2A + 2B ↓ C the rate equation is rate = k[A][B]2. Which of the following could be a possible mechanism for this reaction? A A + B ↓ X (fast) X + A + B ↓ C (slow) B A + 2B ↓ X (slow) X + A ↓ C (fast) C 2A + B ↓ X (slow) X + B ↓ C (fast) D 2A + B ↓ X (fast) X + B ↓ C (slow) 12. Which line in the table has the correct number and type of bonds in the structure shown? H C H H C C H C H H H C H C C H H H H Number of σ-bonds Number of π-bonds A 2 18 B 4 16 C 16 4 D 18 2
Paper Source:NAH_Chemistry_all_2016.pdf
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Exam Specification Info
This question is part of the UK A-Level Chemistry syllabus. In the actual exam, structured questions typically require linking specific keywords to gain full marks. Applaa helps you drill these topics.
Syllabus levelAdvanced Level (A-Level)
SubjectChemistry
Official MarksVariable (2–6 marks)