A-LevelChemistryGroup 17May/June 2018Paper 1 Q171 Mark
When concentrated sulfuric acid is added to solid sodium bromide, bromine gas is produced, along with a number of other products. However when concentrated sulfuric acid is added to solid sodium chloride only hydrogen chloride and sodium hydrogensulfate are produced. What is the reason for this difference?
ABromine is less volatile than chlorine.
BHydrochloric acid is a weak acid.
CSulfuric acid is not an oxidising agent.
DThe bromide ion is a stronger reducing agent than the chloride ion.
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The correct answer is D. This question tests the candidate's understanding of group 17 within the Chemistrysyllabus. The examiner's mark scheme requires...
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