When sodium chloride and metallic sodium are each dissolved in water
-
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.