A-LevelChemistryGroup 17May/June 2018Paper 1 Q351 Mark
Three samples of chlorine gas each contain 0.710g of chlorine. Each sample is reacted with a reagent. • In the first reaction a sample is reacted completely with hydrogen gas. • In the second reaction a sample is reacted completely with cold NaOH(aq). • In the third reaction a sample is reacted completely with hot NaOH(aq). Which masses of the named products would be formed? 1 Exactly 0.730 g of HCl form in the first reaction. 2 Exactly 0.585 g of NaCl form in the second reaction. 3 Exactly 0.975 g of NaCl form in the third reaction.
A1, 2 and 3 are correct
B1 and 2 only are correct
C2 and 3 only are correct
D1 only is correct
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The correct answer is A. This question tests the candidate's understanding of group 17 within the Chemistrysyllabus. The examiner's mark scheme requires...
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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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