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When sodium chloride and metallic sodium are each dissolved in water

When sodium chloride and metallic sodium are each dissolved in water
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  • A Both processes are exothermic
  • B Both processes are endothermic
  • C The dissolution of metallic sodium is endothermic
  • D The dissolution of metallic sodium is exothermic
  • E The dissolution of sodium chloride is explosive
Correct Answer: Option D
Explanation:
When small quantities of sodium metal is added to water, there is an exothermic reaction, and they react to form sodium hydroxide and hydrogen.

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