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Which of the following is the Arrhenius definition of an acid?

a. a substance that donates a hydrogen ion to another substance during a reaction
b. a substance that increases the concentration of hydronium ions when dissolved in water
c. a substance that accepts a lone-pair of electrons during a reaction
d. a substance that has a pH less than 7

User Metalhead
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1 Answer

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Arrhenius is a substance that dissociates in water to produce hydrogen ions (H+) and there is a clear answer which coincides with this definition. The correct answer is definitely b. a substance that increases the concentration of hydronium ions when dissolved in water.
User Murali
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