Bromine reacts with sodium iodide to form sodium bromide and iodine. In this reaction, bromine forms bromide ions.
Br2+2NaI→2NaBr+I2 \text{Br}_2 + 2\text{NaI} \rightarrow 2\text{NaBr} + \text{I}_2 Br2+2NaI→2NaBr+I2In this reaction, bromine has been reduced.
Explain, using the equation, how you know that bromine has been reduced.
Practise Edexcel GCSE Chemistry Group 7 with exam-style questions for Foundation and Higher tier. 87 questions, matched to the Edexcel GCSE Chemistry (1CH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.