What is Acid and Base?
1. Regarding Arrhenius
An acid is a substance that increases the H+ (or H3O+) concentration in an aqueous solution.
A base is a substance that increases the
concentration in an aqueous solution.
2. Regarding Bronsted-lowry
HCl(aq) + NaOH(aq) → HOH + NaCl
Acid = a proton donor in a reaction
Base = a proton acceptor in a reaction
3. Regarding Lewis
An acid is an electron pair acceptor
Base is an electron pair donor
Acid/Base reaction : always produce water and salt.
For example :
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