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A.
both processes are exothermic
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B.
both processes are endothermic
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C.
the dissolution of metallic sodium is endothermic
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D.
the dissolution of metallic sodium is exothermic
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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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