Calculate the change in pH when 0.268 mol H' is added to 1.00 L of each of the following buffers. 1st attempt Part 1 If the final pH is lower than the initial, your answer should be a negative number. a 0.560 M solution of pyridine (py) containing 0.500 M pyH change in pH- Part 2 If the final pH is lower than the initial, your answer should be a negative number, a 0.600 M solution of aniline (an) containing 0.900 ManH+ change in pH =