Step 1: Write Ksp for CuBr
CuBr (s) → Cu+ (aq) + Br- (aq) Ksp = 6.27x10-9
Step 2: Write the Kf for Cu(NH3)2
Cu+ (aq) + 2 NH3 (aq) → Cu(NH3)2 (aq) Kf = 6.3x1010
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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