The Following Question Refers to a 2 $\times$ 10^-5)and 0

Multiple Choice

The following question refers to a 2.0-liter buffered solution created from 0.31 M NH₃ (K_b = 1.8 $\times$ 10^-5) and 0.26 M NH₄F.When 0.10 mol of H⁺ ions is added to the solution what is the pH?

A) 4.82
B) 4.66
C) 10.53
D) 9.18
E) 7.88