[bioguy2]

i hve been having trouble trying to figure out this problem:  a solution of 10.00 ml of .750 M Cu(OAc)2, a soluble salt, and 10.00 mL of .150 M HCl are mixed together in a beaker.  a reaction occurs and a white solid, CuCl2 (s), precipitates and settles on the bottom of the flask.  acetic acid is produced as well.  ksp of CuCl2 is 2.0 x 10 ^-9

Write the balanced equation for the reaction of Cu(OAc)2 and HCl and determine the concentrations of:
[Cu+2], [HOAc], [OAc-], and [H3O+]
okay i think i have the balanced equation which is
Cu(OAc)2 +  2HCl ---->>> CuCl2 +  2HOAc

i am just not sure where to go now.  i thought i could solve the [Cu2+] by using the Ksp which would be
2.0 x 10 ^ -9 = [Cu2+][Cl]^2
i got 7.94 x 10 ^ -4 M = Cu2+, i am not sure if i am on the right track, any help would be appreciated

[Borek]

Start finding out the limiting reagent.

But the question is idiotic - CuCl₂ is well soluble, about 40 g/100g of water. Are you sure question doesn't ask about CuCl? Even then pK_so should be around 6 or 7.

[bioguy2]

thanks Borek, i think i figured the problem out