Question

The molar solubility of Cd3(PO4)2 is 1.19×10-7 mol/L at 25°C.

Calculate the solubility of Cd3(PO4)2 at 25°C._____g/L.

Calculate Ksp at 25°C._______

Answer #1

1)

Molar mass of Cd3(PO4)2 = 3*MM(Cd) + 2*MM(P) + 8*MM(O)

= 3*112.4 + 2*30.97 + 8*16.0

= 527.14 g/mol

Molar mass of Cd3(PO4)2= 527.14 g/mol

s = 1.19*10^-7 mol/L

To covert it to g/L, multiply it by molar mass

s = 1.19*10^-7 mol/L * 527.14 g/mol

s = 6.273*10^-5 g/L

Answer: s = 6.27*10^-5 g/L

2)

The salt dissolves as:

Cd3(PO4)2 <----> Cd2+ + 2 PO43-

s 2s

Ksp = [Cd2+][PO43-]^2

Ksp = (s)*(2s)^2

Ksp = 4(s)^3

Ksp = 4(1.19*10^-7)^3

Ksp = 6.741*10^-21

Answer: Ksp = 6.74*10^-21

The solubility of Ag3PO4 at 25°C is 0.0178 g/L.
a. Calculate the molar solubility of Ag3PO4. (ans in ml/L)
b. Calculate Ksp.

Question 1 :
The solubility product, Ksp, of
Cd3(PO4)2 is 2.5 x
10-33. What is the solubility (in g/L) of
Cd3(PO4)2 in pure water?
Question 2 :
The solubility product of Cu(OH)2 is 4.8 x
10-20. Calculate the value of pCu2+, or
-log[Cu2+], in an aqueous solution of NaOH which has a
pH of 12.89 and is saturated in Cu(OH)2.
Question 3 :
The equilibrium constant for the formation of
Cu(CN)42- is 2.0 x 1030. Calculate
the value of pCu2+,...

What is the molar solubility (in mol/L) of Pb(OH)2 (Ksp = 5.06 ⋅
10 − 13 ) in a solution buffered at 11.21.

Calculate the solubility of Ca3(PO4)2
(Ksp = 1.3 x 10-32) in a 0.083
M Ca(NO3)2 solution.
A. 2.4 x 10-15 mol/L
B. 2.0 x 10-16 mol/L
C. 4.8 x 10-15 mol/L
D. 5.7 x 10-30 mol/L

The solubility of the ionic compound M2X3 having a molar mass of
(2.0x10^2) g/mol is (1.60x10^-7) g/L. Calculate the Ksp of the
compound.

Calculate the molar solubility of Ag2CrO4 (Ksp = 1.1 × 10-12) at
25 °C in various aqueous solutions.
Calculate the solubility in 0.249 M
AgNO3
Calculate the solubility in 0.134 M
Na2CrO4

Calculate the molar solubility of Ag2CrO4
(Ksp = 1.1 × 10-12) at 25 °C in
various aqueous solutions.
A)Calculate the solubility in 0.200 M
AgNO3
B)Calculate the solubility in 0.200 M
Na2CrO4

1. At 25 oC the solubility of lead(II) iodide is 1.52
x 10-3 mol/L. Calculate the value of Ksp at
this temperature. Give your answer in scientific notation to 2
SIGNIFICANT FIGURES (even though this is strictly incorrect).
2. At 25 oC the solubility of zinc hydroxide is 1.71
x 10-6 mol/L. Calculate the value of Ksp at
this temperature. Give your answer in scientific notation to 2
SIGNIFICANT FIGURES (even though this is strictly incorrect).

Which of the following has the greatest molar solubility?
Ca3(PO4)2 Ksp = 1.0 x 10-26
CaF2 Ksp = 3.4 x 10-11
CaCO3 Ksp = 3.9 x 10-9
CaC2O4 Ksp = 2.3 x 10-9
CaSO4 Ksp = 2.4 x 10-5

The solubility product constant Ksp of
Mn(OH)2 is 2.1 x 10-13 at 25oC.
The molar mass of Mn(OH)2 is 88.96 g/mol.
a. Calculate its molar solubility
b. Calulate its solubility in g/L

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