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coldgirl [10]
3 years ago
9

At 25 °c only 0.0260 mol of the generic salt ab3 is soluble in 1.00 l of water. what is the ksp of the salt at 25 °c?

Chemistry
2 answers:
Schach [20]3 years ago
6 0

<u>Answer:</u> The K_{sp} of the given salt at 25°C is 1.23\times 10^{-5}

<u>Explanation:</u>

To calculate the molarity of solution, we use the equation:

\text{Molarity of the solution}=\frac{\text{Moles of solute}}{\text{Volume of solution (in L)}}

Moles of AB_3 = 0.0260 mol

Volume of solution = 1.00 L

Putting values in above equation, we get:

\text{Molarity of }AB_3=\frac{0.0260mol}{1L}=0.0260M

The chemical equation for the ionization of AB_3 salt follows:

AB_3(aq.)\rightarrow A^{3+}(aq.)+3B^-(aq.)

The expression of K_{sp} for above reaction is written as:

K_{sp}=[A^{3+}][3B^{-}]^3

We are given:

[A^{3+}]=0.0260M

[B^-]=(3\times 0.0260)=0.078M

Putting values in above expression, we get:

K_{sp}=(0.0260)\times (0.078)^3\\\\K_{sp}=1.23\times 10^{-5}

Hence, the K_{sp} of the given salt at 25°C is 1.23\times 10^{-5}

Sladkaya [172]3 years ago
4 0
Given:

At 25 degrees Celcius:

amount of generic salt AB3 = 0.0260 moles
Volume of solvent = 1.0 L water

Set up a balanced chemical equation:

AB3 =========> A3+ + 3B-
0.0260M             0.0260   0.078

Ksp = [A][B]^3
Ksp = 1.23 x 10^-5<span />
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