Asked by Darcy
                In a solution of .200M NaI, solid AgI was placed in. Calculate the solubility if AgI (Ksp=1.5*10^-16)
            
            
        Answers
                    Answered by
            Shenaya
            
    Assuming complete dissociation of NaI as it is an ionic compound,
NaI --> Na^+ + I^-
x x (moldm^-3)
and,
AgI <==> Ag^+ + I^-
y y (moldm^-3)
y=solubility of AgI
So the total [I^-]=(x+y) moldm^-3
But, Ksp AgI = [Ag^+][I^-]=y(x+y) mol^2dm^-6 = 1.5*10^-16 mol^2dm^-6
Hope this helps..
(Please note that I haven't mentioned the state of the above compounds)
             
    
NaI --> Na^+ + I^-
x x (moldm^-3)
and,
AgI <==> Ag^+ + I^-
y y (moldm^-3)
y=solubility of AgI
So the total [I^-]=(x+y) moldm^-3
But, Ksp AgI = [Ag^+][I^-]=y(x+y) mol^2dm^-6 = 1.5*10^-16 mol^2dm^-6
Hope this helps..
(Please note that I haven't mentioned the state of the above compounds)
                    Answered by
            Darcy
            
    Thank you so much!
    
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