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Why is it safe to add acid slowly into water?

Answer and explanation

Correct answer: Heat spreads through a larger volume

Diluting a concentrated acid is highly exothermic: hydration of the acid particles releases heat. Adding acid slowly to a larger volume of water allows the released heat to spread through the water and be dissipated more safely, reducing the chance of sudden boiling and dangerous splashing. Water should not be poured into concentrated acid, because a small amount of water can heat rapidly and splatter acid. Thus option A is correct.

Related tags

Acid DilutionExothermic ReactionLaboratory SafetyAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience

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