What is the pH of a 0.50 M aqueous NaCN solution? pKb of CN− is 4.70. What is the pH of a 0.50 M aqueous NaCN solution? pKb of CN− is 4.70. June 2, 2021 Category: Chapter 7 - Equilibrium , Chemistry , JEE Adv and Mains Chemistry 41 Years Solved Video Solutions 1979 - 2019 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related