Question

What concentration of so32– is in equilibrium with ag2so3(s) and 2.60 × 10-3 m ag ? the ksp of ag2so3 can be found here?

Answer 1

When the Ksp of Ag2SO3 is 1.5 x 10^-14 

and when the reaction equation is:

 Ag2SO3 ↔ 2Ag+(aq) +  SO3-- (aq)

so,

Ksp = [Ag+]^2 *[SO3--]

by substitution:

1.5 10^-14 = (2.6 x 10^-3)^2 *[SO3--]


∴ [SO3--] = 2.2 x10^-9