The dissolution of ammonium nitrate (NH4NO3) in water is an endothermic reaction. When NH4NO3 dissolves in water, it absorbs heat from the surroundings, leading to a drop in temperature of the solution. This is why you may feel the solution getting colder when ammonium nitrate is added to water.
NH4NO3 react with water is a endothermic or exothermic reaction
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