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Sagot :

We have an acid.

Let's suppose we have the next reaction HA <===> H+ + A- from a weak acid like: CH3COOH(aq) + H2O(l) <=> CH3COO-(aq) + H3O+(aq)

Ka = ionization constant = Products / reactanst

[tex]Ka\text{ = }\frac{\lbrack CH3COO-\rbrack x\lbrack H3O+\rbrack}{\lbrack CH3COOH\rbrack}=\text{ }\frac{16.4M\text{ x }7.6M}{0.8M}=\text{ 155.8 M}[/tex]

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