Question

Enter your answer in the provided box What is the pH of a solution containing 0.49 M HCOOH and 0.41 M HCOOK? The K, for HCOOH is 1.7 x 10"

Answer 1

Henderson The PH can be determined by using the Hasselbalch equation, which is as follows: pH = PKQ + login [salt) [aud) PH = PRA + 4900 [Hook. 6) Givena [ 14 cvox ) = 0.41M ; [hwon] =0.49 M ka = 1.78104 PKA = -logo ka = -fog.(1.7x1054) = 3.77 Plugging the values in equ (i) we get: PH = 3,77 + 1097. o. Yung = 3.77 + (-0.08) PH = 3.69