객관식
Determine the molar solubility of BaF2 in pure water given that the Ksp for BaF2 is 2.45 × 10⁻⁵.
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18. Aqueous Equilibrium
Solubility Product Constant: Ksp
객관식
Which of the following is the correct Ksp expression for the compound C2D3 in terms of its molar solubility x?
A
Ksp = 4x^5
B
Ksp = x^3
C
Ksp = x^5
D
Ksp = 2x^3
검증된 단계별 안내1
Understand the dissociation of the compound C2D3 in water. When C2D3 dissolves, it breaks into its constituent ions. Assume it dissociates into 2 C ions and 3 D ions.
Write the balanced chemical equation for the dissociation: C2D3(s) ⇌ 2C(aq) + 3D(aq).
Define the molar solubility of C2D3 as x. This means that for every mole of C2D3 that dissolves, x moles of C2D3 dissociate.
Express the concentrations of the ions in terms of x. From the balanced equation, the concentration of C ions will be 2x and the concentration of D ions will be 3x.
Write the Ksp expression using the concentrations of the ions: Ksp = [C]^2[D]^3 = (2x)^2(3x)^3. Simplify this expression to find the correct Ksp formula in terms of x.
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