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Ch.17 - Acids and Bases
Chapter 17, Problem 33c

Identify each substance as an acid or a base and write a chemical equation showing how it is an acid or a base according to the Arrhenius definition. c. KOH(aq)

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Arrhenius Definition of Acids and Bases

The Arrhenius definition states that acids are substances that increase the concentration of hydrogen ions (H⁺) in aqueous solution, while bases increase the concentration of hydroxide ions (OH⁻). This definition is fundamental for classifying substances based on their behavior in water.
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Arrhenius Acids and Bases

Chemical Equations

Chemical equations represent the transformation of reactants into products, showing the reactants' identities and their quantities. In the context of acids and bases, these equations illustrate how an acid donates H⁺ ions or how a base provides OH⁻ ions in solution, which is essential for demonstrating their properties.
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KOH as a Base

Potassium hydroxide (KOH) is classified as a strong base according to the Arrhenius definition because it dissociates completely in water to produce K⁺ and OH⁻ ions. The chemical equation for this dissociation is KOH(aq) → K⁺(aq) + OH⁻(aq), highlighting its role in increasing hydroxide ion concentration in solution.
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