Answer Happy

Part 2. Show detailed Calculation steps and Indicate your Units for Full Points 135 Points 1. (a) Define/explain a buffer solution.[3points] (1) Dr. Harris and Dr. Bilolo went to the lab and prepared Three Buffers A, B and C. They plotted their results and got the graph below. The Y-axis represents the acidity of the buffers. Which of the following, (HO), pH, OH), Ka, Kb, pka could correspond to the X-axis of their graph. Hint there could be more than one. Explain your answer in detail 10 Points Buffer Acidity B A (ii) Which of the buffers will have the Smallest/Least pKa? Explain 4 Points = (iii) Under what conditions will the pKa =pH of their buffer? 4Points
(b) Dr. Pope came to the lab and accidently added 200ml of water to the buffer solution. How would the accident affect the pH of the buffer they made? Explain 4Points + (c) In a separate experiment Dr. Martin and Dr. Madden prepared the buffer system below H2O(l) + NH4+ (aq) = NHz(aq) + Hz0+ (aq) which had equilibrium concentrations of NH;(base)-0.051 M and NH, (acid) 0.037 M. If the Ka for NH4* is 9.85 x 10 Calculate the pOH of the buffer they made. 10 Points