A student prepares a aqueous solution of 4chlorobutanoic acid . Calculate the fraction of -chlorobutanoic acid that is in the dissociated form in his solution. Express your answer as a percentage. You will probably find some useful data in the ALEKS Data resource. Round your answer to significant digits.

Incomplete question: The concentration of the aqueous solution is 0.65 mM

The percentage of dissociation is 19.23%

Explanation:

The pKa of the 4-chlorobutanoic acid is 4.53, thus:

The initial concentration is 0.65 mM = 6.5x10⁻⁴M

The reaction is:

                   HA        +         H₂O        =         H₃O⁺        +         A⁻

I                6.5x10⁻⁴                                          0                       0

C               -x                                                   +x                      +x

E              6.5x10⁻⁴ -x                                      x                        x

The Ka is:

The percentage of dissociated is:

%

the answer is b. dilution