Rank the following five salts in order of decreasing solubility, in terms of mass per unit volume.

(The most soluble gets rank 1, the least soluble gets rank 5.)

Ag3PO4 (Ksp = 1.80×10-18)

Ag2CrO4 (Ksp = 9.00×10-12)

Ca5(PO4)3F (Ksp = 1.00×10-60)

Ca3(PO4)2 (Ksp = 1.30×10-32)

AgCl (Ksp = 1.60×10-10)

So here is my work:

i first found the concentration of the ions:

Ag3PO4 : 1.60685E-5 M

Ag2CrO4 : 1.31037E-4 M

Ca5(PO4)3F : 6.109086E-8 M

Ca3(PO4)2 : 1.644765E-7 M

AgCl : 1.264911E-5 M

Then i used the concentrations and multiplied it by the molar mass and got the following solubilities [g / L]

Ag3PO4 : .0067259 g/L

Ag2CrO4 : .0434687 g/L

Ca5(PO4)3F : 3.0808E-5 g/L

Ca3(PO4)2 : 5.10167E-5 g/L

AgCl : .0081288 g/L

So the salt with the highest solubility would be the salt with the highest number:

3) Ag3PO4

1) Ag2CrO4

5) Ca5(PO4)3F

4) Ca3(PO4)2

2) AgCl

The rank that i have shown is incorrect

and i dont know why

can someone PLEASE check my work

THANK YOU!!

ya.....i know the answer already...

the calculation of AgCl really has problem with it!

the answer for this question is actually like this:

2) Ag3PO4

1) Ag2CrO4

5) Ca5(PO4)3F

4) Ca3(PO4)2

3) AgCl(0.001813g/L)

am i right?