Determine the [OH^-] of a solution that is 0.145 M in CO3^2-.

1 answer

...CO3^2- + HOH ==> HCO3^- + OH^-
I..0.145..............0......0
C...=x................x......x
E.0.145-x.............x......x

Kb for CO3^2- = (Kw/k2 for H2CO3) = (x)(x)/(0.145-x)
Solve for x = (OH^-)