Question

. Which of the following aqueous solutions has the highest pH at 25oC? (a) 0.10 M NaIO (Ka of HIO = 2.3 x 10−11) (b) 0.10 M NaCN (Ka of HCN = 6.2 x 10−10) (c) 0.10 M NaF (Ka of HF = 6.8 x 10−4 ) (d) 0.10 M NaClO (Ka of HClO = 2.9 x 10−8 ) (e) 0.10 M NaIO3 (Ka of HIO3 = 1.6 x 10−1

Answer 1

(a) 0.1M NaIO solution has maximum pH = 11.82