The acid-dissociation constant for benzoic acid (c6h5cooh) is 6.3×10−5. calculate the equilibrium concentration of c6h5cooh in the solution if the initial concentration of c6h5cooh is 6.3×10−2 m .

Explanation:

Hello,

In this case, we properly write the undergoing dissociation reaction as follows:

Know, by applying the law of mass action over this dissociation reaction, one obtains:

Now, we have to notice that the equilibrium concentrations are given by the change , which alters the aforesaid equation in the following way, based on the ICE method:

Now, solving for , we've got:

Finally, one computes the concentration of benzoic acid as;

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