Chlorine gas is bubbled through an aqueous solution of potassium bromide.
Which ionic equation correctly represents the predicted reaction?
Cl2(g)+Br−(aq)→Cl−(aq)+Br2(aq)\text{Cl}_2(\text{g}) + \text{Br}^-(\text{aq}) \rightarrow \text{Cl}^-(\text{aq}) + \text{Br}_2(\text{aq})Cl2(g)+Br−(aq)→Cl−(aq)+Br2(aq)
2Cl−(aq)+Br2(aq)→Cl2(g)+2Br−(aq)2\text{Cl}^-(\text{aq}) + \text{Br}_2(\text{aq}) \rightarrow \text{Cl}_2(\text{g}) + 2\text{Br}^-(\text{aq})2Cl−(aq)+Br2(aq)→Cl2(g)+2Br−(aq)
Cl2(g)+2Br−(aq)→2Cl−(aq)+Br2(aq)\text{Cl}_2(\text{g}) + 2\text{Br}^-(\text{aq}) \rightarrow 2\text{Cl}^-(\text{aq}) + \text{Br}_2(\text{aq})Cl2(g)+2Br−(aq)→2Cl−(aq)+Br2(aq)
Cl2(g)+2Br−(aq)→2Cl−(aq)+2Br(aq)\text{Cl}_2(\text{g}) + 2\text{Br}^-(\text{aq}) \rightarrow 2\text{Cl}^-(\text{aq}) + 2\text{Br}(\text{aq})Cl2(g)+2Br−(aq)→2Cl−(aq)+2Br(aq)
41 exam-style questions on OCR GCSE Chemistry Predicting chemical reactions. Each one has a worked solution and a mark scheme showing where the marks go.