If 29.0 mL of 0.10 M Ba(NO3)2 are added to 76.0 mL of 0.21 M Na2CO3, will BaCO3 precipitate? Calculate Q

Answer 1

Q = (Ba^2+)(CO3^2-)
[Ba(NO3)2] = 0.10M x (29/105) = ?M
[Na2CO3] = 0.21 M x (76/105) = ?M

Multiply the concns and see how Q compares with Ksp.