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Question

Identify "X"in the following reaction FeCl3(s)Ironchloride+3NaOH(aq)SodiumhydroxideX+3NaCl(s)Sodiumchloride


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Solution

Double displacement reaction:

  1. Ferric chloride (Ironchloride) is a yellow-brown soluble inorganic compound in water.
  2. Sodium hydroxide is a colorless, strong alkaline solution that produces hydroxyl ions (OH-) rapidly
  3. Brown color precipitate is created when we add an aqueous NaOH solution to the aqueous FeCl3 solution. Ferric hydroxide Fe(OH)3 is this precipitate.
  4. The balanced reaction for this reaction is FeCl3(aq)Ironchloride+3NaOH(aq)SodiumhydroxideFe(OH)3(s)Ferrichydroxide(Browncolourppt)+3NaCl(s)Sodiumchloride
  5. Because both the chlorine ion and the hydroxyl ion are exchanged, this is a double displacement reaction.

Therefore, X=Fe(OH)3 in the given reaction.


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