A-LevelChemistryGroup 2Oct/Nov 2021Paper 1 Q141 Mark
A 0.005 mol sample of anhydrous calcium carbonate is completely thermally decomposed to give 100 cm³ of gas. In a separate experiment carried out under the same conditions, a 0.005 mol sample of anhydrous calcium nitrate is completely thermally decomposed. The volume of gaseous products is measured. What total volume of gaseous products is produced from the calcium nitrate?
A50 cm³
B100 cm³
C200 cm³
D250 cm³
✓ Correct Answer
The correct answer is D. This question tests the candidate's understanding of group 2 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