Page 5 - Asam Basa
P. 5
Base in water
While in the ionization reaction of NH when dissolved in water, NH
3
3
acts as a base and H O as an acid.
2
+ -
NH + H O NH + OH (aq)3 (q) 2 (l) 4 (aq)
NH receives a proton (H ) from H O by using a pair of free
+
2
3
electrons on the N atom to bond with H to form an ammonium ion
+
-
(NH ). H O , turns into an OH ion after giving a proton (H ) to NH .
+
2
3
4
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Lewis Theory
According to the concept, what is meant
by acid is a compound that is able to accept
electron pairs from other compounds, or
electron pair acceptors, while bases are
compounds that can give electron pairs to
other compounds or electron pair donors.
Example:
+
H + NH NH BF + NH NH BF
+
3
3
3
3
3
3
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