2)
Solution-
We can write
Ksp = [Bi3+][I-]^3
Now we have
= x(3x)^3 = 27x^4
= 8.1*10^-19
=>x^4 = 3*10^-20
=>x = 1.32*10^-5moles/L
=1.32*10^-5 moles/L * 589.68g/mole
= 0.0078g/L
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