When concentrated sulfuric acid is added to solid sodium chloride, HCl is formed but not Cl$_2$.
When concentrated sulfuric acid is added to solid sodium iodide, I$_2$ is formed.
Which statement explains these observations?
1 )
Sulfuric acid is an oxidising agent and chloride ions are more easily oxidised than iodide ions.
Sulfuric acid is an oxidising agent and iodide ions are more easily oxidised than chloride ions.
3 )
Sulfuric acid is a reducing agent and chloride ions are more easily reduced than iodide ions.
4 )
Sulfuric acid is a reducing agent and iodide ions are more easily reduced than chloride ions.
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