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Creating chemical equations

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A. Sodium bisulfite solution is added to an experiment at the end in order to destroy the unreacted bromine. What reaction is occurring here? Is HSO3- acting as an oxidizing or reducing agent? Write a balanced equation.
b. Write equations to show how nitronium ions might be formed using a mixture of nitric and sulfuric acids.

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This solution provides a brief explanation for reactions of the solution, including the equations.

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a) Sodium bisulfite converts bromine (Br2) to bromide (Br-). Hence HSO3- is acting as a reducing agent.

That is, when sodium bisulphite solution reacts with bromine, it forms sodium bisulphate and ...

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