Explain7 marksChallenge
A student is given two colourless solutions, one containing bromide ions and the other containing iodide ions. Concentrated sulfuric acid is added separately to each solution. The bromide mixture produces a pungent gas that turns moist blue litmus paper red, and the solution turns orange-brown. The iodide mixture produces a violet vapour, and a yellow solid forms. Explain these observations, including the role of the halide ions and balanced equations for the reactions of the halide ions with concentrated sulfuric acid.