State a reason when ammonium chloride is dissolved in water, the test tube becomes cold
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On dissolving ammonium chloride (NH4Cl) in water in a test tube, the test tube becomes cold as it takes heat from the surrounding water. Hence, it is an endothermic reaction.
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When ammonium chloride is dissolved in water, the test tube becomes cold.
Explanation:
When ammonium chloride is dissolved in water, the test tube becomes cold because it is an endothermic reaction. In an endothermic reaction, the heat is absorbed from the surrounding which is in the form of energy. In the given case, ammonium chloride absorbs heat from the solvent which is the water, thereby making the water cold. The temperature of the water drops rapidly when the reaction takes place.
Learn more:
WHEN AMMONIUM CHLORIDE IS DISSOLVED IN WATER IN ATEST TUBE,THE TEST TUBE BECOMES COLD .GIVE REASON
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