A-LevelChemistryStates of matterOct/Nov 2019Paper 1 Q51 Mark
In this question you should assume the vapour behaves as an ideal gas. 0.175g of a volatile liquid produces a vapour of volume 4.50 × 10⁻⁵m³ at 100 °C and pressure of 1.013 x 10⁵ Pa. What is the Mr of the liquid?
A31.9
B87.1
C119
D127
✓ Correct Answer
The correct answer is C. This question tests the candidate's understanding of states of matter 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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