# Problem: Determine the percent ionization of a 0.250M solution of benzoic acid.

###### FREE Expert Solution

We’re being asked to calculate the percent ionization of a 0.250 M solution of benzoic acid.

Recall that the percent ionization is given by:

We know the initial concentration of benzoic acid, 0.250 M. We just need to find the concentration of H+ at equilibrium.

Since benzoic acid has a low Ka value, it’s a weak acid.

Remember that weak acids partially dissociate in water and that acids donate H+ to the base (water in this case).

The dissociation of benzoic acid is as follows:

C6H5COOH(aq) + H2O(l)  H3O+(aq) + C6H5COO(aq); Ka = 6.3 x 10-5

81% (394 ratings) ###### Problem Details

Determine the percent ionization of a 0.250M solution of benzoic acid.

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