Consider the titration of 300.0 mL of 0.457 M NH3 (Kb = 1.8 ×10-5) with 0.500 M HNO3.After 150.0 mL of 0.500 M HNO3 has been added,what is the pH of the solution?
A) 4.83
B) 9.17
C) 6.17
D) 11.17
E) none of these
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