If the equilibrium distance between the ions is r0 =0.276 nm, calculate: (a) the value of the constant B;

Answer : The concentration of benzoic acid in this solution was, 0.149 M

Explanation :

The balanced equilibrium reaction will be,

initially conc.             c                     0                0

At eqm.                    c(1-α)                cα              cα

The expression for dissociation constant is:

when α is very very small the, the expression will be,

Given:

α = 2.05 % = 0.0205

Now put all the given values in this expression, we get:

c = 0.149 M

Therefore, the concentration of benzoic acid in this solution was, 0.149 M