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Which characteristic best identifies an Arrhenius base in aqueous solution?
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17. Acid and Base Equilibrium
Arrhenius Acids and Bases
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Which statement best defines an Arrhenius acid?
A
A substance that donates an electron pair to form a coordinate covalent bond
B
A substance that increases the concentration of in the gas phase
C
A substance that increases the concentration of in aqueous solution
D
A substance that increases the concentration of in aqueous solution
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Recall the Arrhenius definition of acids and bases: An Arrhenius acid is a substance that increases the concentration of hydrogen ions (H\(\textsuperscript{+}\)) in aqueous solution.
Identify that the key characteristic of an Arrhenius acid is its ability to release or produce H\(\textsuperscript{+}\) ions when dissolved in water.
Understand that other options, such as donating an electron pair or increasing the concentration of superoxide ions (O\(\textsubscript{2}\)\(\textsuperscript{−}\)), do not fit the Arrhenius acid definition.
Recognize that the correct statement must specifically mention increasing H\(\textsuperscript{+}\) concentration in aqueous solution to align with the Arrhenius acid concept.
Conclude that the best definition of an Arrhenius acid is: 'A substance that increases the concentration of H\(\textsuperscript{+}\) in aqueous solution.'
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