A 200-ML Sample of 0 $\times$ 10^-7
B)3 $\times$ 10^-8
C)1 $\times$ 10^-8
D)4

A 20.0-mL sample of 0.30 M HClO was titrated with 0.30 M NaOH.The following data were collected during the titration.

What is the K_a for HClO?

A) 1.1 $\times$ 10^-7
B) 3.5 $\times$ 10^-8
C) 1.2 $\times$ 10^-8
D) 4.9 $\times$ 10^-11
E) None of these choices is correct.