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autoionization of water
when pure water reacts with itself to for hydronium 0and hydroxide ions
Kw
1.0x10-14
[H+ (aq) ] = [OH- (aq) ]
neutral solutions
[H+ (aq) ] > [OH- (aq) ]
In acidic solutions
[H+ (aq) ] < [OH- (aq) ]
In basic solutions,
The product of Ka for a weak acid and Kb for its conjugate base is equal to
Kw, the equilibrium constant for autoionization of water.
A stronger acid (large Ka) will have a
weaker conjugate base (small Kb)
A stronger base (large Kb) will have a
a weaker conjugate acid (small Ka).