± Solubility Constant Expression Part A Enter the the K sp expression for the so

Question

± Solubility Constant Expression

Part A

Enter the the Ksp expression for the solid AB2 in terms of the molar solubility x.

Express your answer in terms of x.

Ksp =???

Part C

Enter the the Ksp expression for C2D3 in terms of the molar solubility x.

Express your answer in terms of x.

Ksp =???

t Solubility Constant Expression When excess solid YZ is put in water and allowed to dissolve the following equilibrium reaction occurs and the equilibrium table shown can be set up. YZ (s) Y (aq) Z(aq) initial] excess change) -tr equilibrium excess X -tr The amount of solid that dissolves is called the molar solubility, denoted here by z. Since the concentration of the solid is constant and is not included in the Ksp expression, the equilibrium expression for the reaction is Ksp YOLZ), or, in terms of molar solubility, Kap z

Explanation / Answer

A)

AB2   <—> A2+   +   2B-

x 2x

Ksp = [A2+][B-]^2

= x*(2x)^2

= 4*x^3

C)

C2D3       <—>   2C3+    +   3D2-

2x 3x

Ksp = [C3+]^2 [D2-]^3

= (2x)^2 * (3x)^3

= 4*x^2 * 27 * x^3

= 108 * x^5

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