A-LevelChemistryReaction kineticsFeb/Mar 2021Paper 1 Q101 Mark
A large excess of marble chips is reacted with 25 cm³ of 1.0 mol dm⁻³ hydrochloric acid at 40 °C. How is the result different when the reaction is repeated with 60 cm³ of 0.5 mol dm⁻³ hydrochloric acid at 40 °C?
AThe reaction is faster and more of the products are made when the reaction is complete.
BThe reaction is faster and less of the products are made when the reaction is complete.
CThe reaction is slower and more of the products are made when the reaction is complete.
DThe reaction is slower and less of the products are made when the reaction is complete.
✓ Correct Answer
The correct answer is C. This question tests the candidate's understanding of reaction kinetics 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