Chemistry 9701 · AS & A Level · Electrochemistry

Electrochemistry — practice question

When concentrated sulfuric acid is added to solid sodium chloride, HCl is produced but not $\text{Cl}_2$. When concentrated sulfuric acid is added to solid sodium iodide, $\text{I}_2$ is produced. Which statement accounts for these observations?

  • ASulfuric acid is an oxidising agent and chloride ions are more easily oxidised.
  • BSulfuric acid is an oxidising agent and iodide ions are more easily oxidised.
  • CSulfuric acid is a reducing agent and chloride ions are more easily reduced.
  • DSulfuric acid is a reducing agent and iodide ions are more easily reduced.

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