Answer
A. 1.347
B. 5.060
C. 2.824
D. 2.921
Work Step by Step
Ph = -log[h+]
Ph = -log[0.045M]
Ph = -(-1.347)
Ph = 1.347
Ph = -log[h+]
Ph = -log[8.7*^-6M]
Ph = -(-5.060)
Ph = 5.060
Ph = -log[h+]
Ph = -log[0.0015M]
Ph = -(-2.824)
Ph =2.824
Ph = -log[h+]
Ph = -log[1.2*10^-3M]
Ph = -(-2.921)
Ph = 2.921