Problem: Copper(I) ions in aqueous solution react with NH3(aq) according to Cu^+(aq) + 2NH3(aq) yields Cu(NH3)2^+(aq), Kf=6.3*10^10 M^-2. Calculate the solubility (in g . L^-1) of CuBr(s) in 0.23 M NH3(aq). Answer must be in g/L. 

FREE Expert Solution


Step 1: Write Ksp for CuBr


CuBr (s) → Cu(aq) + Br- (aq) Ksp = 6.27x10-9


Ksp = [Cu+][Br-]



Step 2: Write the Kf for Cu(NH3)2 


Cu(aq) + 2 NH3 (aq) → Cu(NH3)2 (aq)       Kf = 6.3x1010


Kf = [Cu(NH3)2][NH3]2Cu+


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Problem Details

Copper(I) ions in aqueous solution react with NH3(aq) according to Cu^+(aq) + 2NH3(aq) yields Cu(NH3)2^+(aq), Kf=6.3*10^10 M^-2. Calculate the solubility (in g . L^-1) of CuBr(s) in 0.23 M NH3(aq). Answer must be in g/L. 

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