In the following reaction identify each reactant as an Arrhenius acid or an Arrhenius base and explain your answers.
NaOH + HCl → NaCl + H2O
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Expert's answer
2018-03-31T09:00:08-0400
An Arrhenius acid is a substance that dissociates in water to form hydrogen ions (H+); that is, an acid increases the concentration of H+ ions in an aqueous solution: HCl = H+ + Cl An Arrhenius base is a substance that dissociates in water to form hydroxide (OH−) ions; that is, a base increases the concentration of OH− ions in an aqueous solution: NaOH = Na+ + OH- This causes the protonation of water, or the creation of the hydronium (H3O+) ion. Thus, in modern times, the symbol H+ is interpreted as a shorthand for H3O+, because it is now known that a bare proton does not exist as a free species in aqueous solution. The Arrhenius definitions of acidity and alkalinity are restricted to aqueous solutions, and refer to the concentration of the solvent ions
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