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Question

What will be the reaction when Sodium metal is dropped into water?


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Solution

Exothermic reaction:

  • "The reaction in which heat energy is evolved is called an exothermic reaction."
  • This reaction produces a heating effect.

Reaction when Sodium is dropped into water:

  • The reaction of Sodium (Na) with water H2O is a violent reaction in which Sodium hydroxide (NaOH) and Hydrogen (H2) are formed.
  • It is an exothermic reaction.
  • The reaction is as follows:

2Na(s)Sodium+2H2O(l)Water2NaOH(l)Sodiumhydroxide+H2(g)Hydrogengas


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