What is the molar concentration of potassium ion in a solution that is #73*"ppm"# with respect to #K_3[Fe(C-=N)_6]#?
And thus in
Since that are 3 moles of potassium ion per mole of salt,
You might be tempted to argue that I should have accounted for the solution density in these calculations. Even if these data were available, at
If I dissolved