Calculate the pH of a solution formed by mixing 250.0 mL of 0.15 mol L-1 NH4Cl with 100.0 mL of 0.20 mol L-1 NH3. The Kb for NH3 is 1.8 × 10-5.
A) 9.13
B) 9.25
C) 9.53
D) 4.74
E) 8.98
Correct Answer:
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