The Classical (Arrhenius) Definition of Acids and Bases
An acid is a substance that has H in its formula and dissociates in water
to yield H3O+.
A base is a substance that has OH in its formula and dissociates in water
to yield OH-.
Arrhenius acids contain covalently bonded H atoms
that ionize in water.
Neutralization occurs when the H+ ion from the acid and the OH- ion
from the base combine to form water.
H+(aq) + OH- (aq) H2O(l) ²Horxn = -55.9 kJ
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