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The slow addition of acid to water is related to which energy change?

Answer and explanation

Correct answer: Heat is released

The governing concept is an exothermic change during acid dilution. When acid particles become surrounded by water molecules, energy is released as heat. Adding the acid slowly to a larger volume of water allows this heat to spread safely and prevents local overheating or splashing. Therefore option A is correct. The process is not defined by absorption of light, formation of sound, or zero heat change.

Related tags

ScienceClass10Exothermic-ChangeAcid-DilutionAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And Behaviour

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