Calculate the PH of a Solution That Is 2 $\times$ 10^-4)
A)3

Multiple Choice

Calculate the pH of a solution that is 2.00 M HF,1.00 M NaOH,and 0.642 M NaF.(K_a = 7.2 $\times$ 10^-4)

A) 3.14
B) 3.36
C) 2.65
D) 2.93
E) none of these