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Example 1
| I am not recording a livescribe for this problem as it follows closely previous problems. Solution: A Because sodium formate is a strong electrolyte, it ionizes completely in solution to give formate and sodium ions. The Na+ ions are spectator ions, so they can be ignored in the equilibrium equation. Because water is both a much weaker acid than formic acid and a much weaker base than formate, the acid–base properties of the solution are determined solely by the formic acid ionization equilibrium: 
The initial concentrations, the changes in concentration that occur as equilibrium is reached, and the final concentrations can be tabulated.
B We substitute the expressions for the final concentrations into the equilibrium constant expression and make our usual simplifying assumptions, so
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