Chemistry Calculation?

Question

Silver sulfate has a Ksp of 1.20*10^-5.
If you add 25.0 mL of .015 M AgNO3 to150 mL of 2.8*10^-3 M Na2SO4, will you get a precipitate?

Please try and explain why or why not you would get a precipitate. Thanks a ton!!!!

Answer 1

Total volume = 175 ml
[Ag+] = 0.015 M * (25 mL/175 mL) = 0.005 M
[SO42-] = 0.0028 M * (150 mL/175 mL) = 0.0024 M

Q = [Ag+]^2[SO42-] = (0.005)^2 * 0.0024 = 6 * 10^-8

Since Q < Ksp, no precipitate will form.

Answer 2

I'm in my skewls chemistry olympiad and we have to study this vaugely.I will try my best.
Since ksp changes only with temperature,the ksp here remains a constant as all other factors remains the same.Let ksp be x.
ummm actually i'm lazy to do this sum but isn't this a normal stndard easy chemistyr question.....