Calculate the pH change in a phosphate buffer when acid or base is added
a. If 50 ml of 0.01 M HCI is added to 100 ml of 0.05 M phosphate buffer at pH 7.2, what is the resultant pH? What are the concentrations of H2PO4- and HPO42- in the final solution?
b. If 50 ml of 0.01 M NaOH is added to 100 ml of 0.05 M phosphate buffer at pH 7.2, what is the resultant pH? What are the concentrations of H2P04- and HPO42- in this final solution?
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