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 ______.
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A.
dissociation
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B.
decomposition
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C.
dilution
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D.
dissolution
Correct Answer:
C. dilution
Explanation:
The process of mixing an acid or a base with water to lower the concentration of hydronium ions (H3O+) or hydroxide ions (OH-) per unit volume is known as dilution. This procedure decreases the chemical's strength by increasing the amount of solvent relative to the solute. In the context of the provided options, dissociation refers to the separation of ions, decomposition involves a chemical breakdown, and dissolution is the general process of a substance dissolving in a solvent. Therefore, the specific term for reducing ion concentration through the addition of water is dilution.
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