Page 4 - Asam Basa

Bronsted-Lowry Theory

According to Bronsted-Lowry, acids are
species (ions or molecules) that act as donor
+
protons (proton givers or H ) to another
species. A base is a species (molecule or ion)

that acts as an acceptor proton (proton or H +
acceptor).

Acid in water

When strong acids dissolve in water. The acid is entirely ionized or
decomposed. For example, hydrochloric acid following:

+
HCl H + Cl -
(aq)
(aq)
(aq)
Those protons can't go anywhere freely. Its charge will immediately
attract a group of water molecules. The proton is bound to the H O molecule
2
+
and the group is called hydronium (H O )
3
+ -
HCl + H O H O + Cl(aq)
(aq)
(aq)
2
(l)
3
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