Reaction between Ammonium chloride and Barium hydroxide is_______

Answer:

The reaction between Ammonium chloride and Barium hydroxide is an endothermic reaction.

Ba(OH)2 +2NH4Cl → BaCl2 + 2NH3 + 2H2O

Ammonium Chloride is slightly acidic and Barium Hydroxide very basic so will get an acid-base reaction.

This reaction is used to recover ammonia in the preparation of sodium carbonate from NaCl.

Endothermic reaction

Endothermic reactions are chemical reactions wherein the reactants absorb heat from the environment to produce products. These reactions cause a cooling effect by lowering the temperature of the surrounding area.

  • The system absorbs heat from the surroundings.
  • The entropy of the surrounding decreases (ΔS <0).
  • Enthalpy change (ΔH) is positive.

Examples of endothermic reaction

Few examples of endothermic reactions are

  • Evaporation of liquid water, forming water vapour.
  • The baking of bread.

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