What is the maximum mass (in grams) of each of the following soluble salts that

Question

What is the maximum mass (in grams) of each of the following soluble salts that can be added to 190 mL of 0.050 M BaCl2 without causing a precipitate to form? (Assume that the addition of a solid causes no change in volume) A) (NH4)2SO4 B) Pb(NO3)2 C)NaF
Please explain in detailed steps and thak you. What is the maximum mass (in grams) of each of the following soluble salts that can be added to 190 mL of 0.050 M BaCl2 without causing a precipitate to form? (Assume that the addition of a solid causes no change in volume) A) (NH4)2SO4 B) Pb(NO3)2 C)NaF
Please explain in detailed steps and thak you. A) (NH4)2SO4 B) Pb(NO3)2 C)NaF
Please explain in detailed steps and thak you.

Explanation / Answer

(a) Dissociation of BaSo4:

BaSO4 < ==> Ba2+ + SO42-

Ksp of BaSo4 =[ Ba2+][SO42-] = 9.1 × 10–11

[SO42-] = (9.1*10–11) / 0.05 M   

= 1.82x 10-9 M

Now, number of moles = molarity * volume (L)

= 1.82x 10-9 mol/L * 190mL

= 1.82x 10-9 mol/L * 0.19L

= 3.46 * 10-10 mol

and mass = number of moles * molar mass of (NH4)2SO4

= 3.46 * 10-10 mol * 132.1 gm/mol

= 4.6* 10-8 gm

steps for b & c are same, except ksp values of PbCl2 and BaF2.

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