In a laboratory investigation, a student adds concentrated sulfuric acid dropwise to a boiling tube containing solid sodium bromide. An orange-brown vapour and a choking gas are evolved.
Which of the following lists contains only products that are formed as a result of a redox reaction between the halide ions and the sulfuric acid?
HBrHBrHBr, SO2SO_2SO2, H2OH_2OH2O
Br2Br_2Br2, SO2SO_2SO2, H2OH_2OH2O
Br2Br_2Br2, H2SH_2SH2S, H2OH_2OH2O
HBrHBrHBr, NaHSO4NaHSO_4NaHSO4, Br2Br_2Br2