CBSE Class 10 Chemistry Notes Dilution
Mixing an acid or base with water results in decrease in the concentration of ions (H3O+/OH – ) per unit volume. Such a process is called dilution and the acid or the base is said to be diluted. The process of dissolving an acid or a base in water is a highly exothermic one. Care must be taken while mixing concentrated nitric acid or sulphuric acid with water.
The acid must always be added slowly to water with constant stirring. If water is added to a concentrated acid, the heat generated may cause the mixture to splash out and cause burns. The glass container may also break due to excessive local heating.
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