What is the pH of 0.050M KCN?

[Shawn]

HowTF am I supposed to figure that out? They obviously assume that I know something about KCN which I don't. Don't I need to know the Ka or Kb to solve this? 😕

 

[KLin]

http://www.chem.purdue.edu/gchelp/howtosolveit/Equilibrium/Salt_Solutions.htm

 

[Shawn]

Originally posted by: KLin
http://www.chem.purdue.edu/gchelp/howtosolveit/Equilibrium/Salt_Solutions.htm

Thanks! Is there any way to do this problem with no more information given than they gave me, or no? In the example on that site Ka was given for HCN.

 

[iwantanewcomputer]

it is standard practice in higher level chem classes to give basic information and make you look up constants