During an industrial recovery process, chlorine gas is bubbled through an aqueous solution of sodium bromide to extract elemental bromine.
chlorine+sodium bromide→sodium chloride+bromine \text{chlorine} + \text{sodium bromide} \rightarrow \text{sodium chloride} + \text{bromine} chlorine+sodium bromide→sodium chloride+bromineGive one reason, in terms of the trends in Group 7, why this reaction occurs.
106 exam-style questions on Edexcel GCSE Chemistry 7.2 Group 7, covering 7.2.1 Physical properties of the halogens, 7.2.2 Reactions of the halogens, 7.2.3 Relative reactivity and displacement reactions of the halogens, and 7.2.4 Halogen displacement as a redox reaction. Each one has a worked solution and a mark scheme showing where the marks go.