when hcl is added to the buffer the h ions will be largely removed from solution by the reaction of h with the conjugate base ch3coo− : h ch3coo−→ch3cooh so the number of moles of the conjugate base present in the initial buffer will decrease depending upon the moles of hcl added. how many moles of conjugate base ch3coo− are present in the buffer after the addition of the acid?