Under Arrhenius theory, which substance produces OH− in water?

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Multiple Choice

Under Arrhenius theory, which substance produces OH− in water?

Explanation:
Under Arrhenius theory, a substance that increases the concentration of hydroxide ions in water is a base. This happens when the compound dissociates to release OH−. For example, NaOH dissolves to give Na+ and OH−, supplying hydroxide ions in solution. In contrast, Arrhenius acids release H+ (often as H3O+ in water), so they do not produce OH−. Charles' Law and percent yield refer to gas behavior and reaction efficiency, not to acid–base behavior in solution. Therefore, the substance that produces OH− in water is an Arrhenius base.

Under Arrhenius theory, a substance that increases the concentration of hydroxide ions in water is a base. This happens when the compound dissociates to release OH−. For example, NaOH dissolves to give Na+ and OH−, supplying hydroxide ions in solution. In contrast, Arrhenius acids release H+ (often as H3O+ in water), so they do not produce OH−. Charles' Law and percent yield refer to gas behavior and reaction efficiency, not to acid–base behavior in solution. Therefore, the substance that produces OH− in water is an Arrhenius base.

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