Asolution is made by mixing 50 ml of 2.0m k2hpo4 and 25 ml of 2.0m kh2po4. the solution is diluted to a final volume of 200 ml. what is the ph of the final solution

50 mL of 2.0 M of and 25 mL of 2.0 M of were mixed to make a solution

Final volume of the solution after dilution = 200 mL    (given)

Final concentration of , [] =

Final concentration of , [] =

Using Hasselbach- Henderson equation:

Substituting the values:

Hence,  the of the final solution is 7.15.