Is NaOH an acid or base?

NaOH( s ) → Na + ( aq ) + OH – ( aq )

An Arrhenius acid is therefore any substance that ionizes when it dissolves in water to give the H+, or hydrogen, ion.

An Arrhenius base is any substance that gives the OH, or hydroxide, ion when it dissolves in water.

NaOH is an Arrhenius base because it dissociates in water to give the hydroxide (OH) and sodium (Na+) ions.

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