A-LevelChemistryChemical energeticsMay/June 2015Paper 1 Q331 Mark
Which statements are correct for all exothermic reactions? 1 ∆H for the reaction is negative. 2 On a reaction pathway diagram the products are shown lower than the reactants. 3 The reaction will happen spontaneously.
A1, 2 and 3 are correct
B1 and 2 only are correct
C2 and 3 only are correct
D1 only is correct
✓ Correct Answer
The correct answer is B. This question tests the candidate's understanding of chemical energetics 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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