Assertion : The water pouch of an instant col | vedclass

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(A) The dissolution of $NH_4NO_3$ in water is an endothermic process,which absorbs heat from the surroundings,thereby lowering the temperature of the

Vedclass · Accepted Answer

If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.

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(A) The dissolution of $NH_4NO_3$ in water is an endothermic process,which absorbs heat from the surroundings,thereby lowering the temperature of the pack.This phenomenon is related to the colligative properties of solutions.The addition of a non-volatile solute to a solvent leads to a decrease in the vapor pressure,which results in the depression of the freezing point of the solvent.Since the cooling effect in the cold pack is a practical application of the energy changes associated with dissolving solutes and the principles of colligative properties,both statements are correct and the reason explains the underlying principle.

Assertion : The water pouch of an instant cold pack for treating athletic injuries breaks when squeezed and $NH_4NO_3$ dissolves,lowering the temperature.
Reason : Addition of a non-volatile solute into a solvent results in the depression of the freezing point of the solvent.

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Assertion : The water pouch of an instant cold pack for treating athletic injuries breaks when squeezed and $NH_4NO_3$ dissolves,lowering the temperature.Reason : Addition of a non-volatile solute into a solvent results in the depression of the freezing point of the solvent.