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← ScienceWhich outcome arises when concentrated sulfuric acid accidentally contacts solid sodium chloride?
A)Hydrogen chloride gas evolution✓
B)Complete dissolution and neutralization
C)Sodium sulfate precipitate forms
D)No observable chemical reaction
💡 Explanation
Hydrogen chloride gas evolves via proton transfer followed by its release because of the ionically bonded chloride's protonation by sulfuric acid, triggering the formation of HCl gas. Therefore, gaseous HCl forms rather than dissolution with neutralization or a sulfate precipitate because protonation occurs.
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