Posted by **Serena** on Sunday, March 16, 2014 at 8:31pm.

I have discovered a new chemical compound with the formula A2B. If a saturated solution of A2B has a concentration of 4.35x10-4M.

a) What is the concentration of B2- ions?

b. What is the concentration of A1+ ions?

c. What is the solubility product constant for A2B?

Can you please show me how to do all of these problems if you know the concentration of the solution.

- Chemistry -
**DrBob222**, Sunday, March 16, 2014 at 8:43pm
Reason your way through it. I assume A2B is a solid.

.........A2B --> 2A^+ + B^2-

.....4.35E-4M....x......x

For every molecule of A2B that dissolves, you must have two (2) ions of A^+ and one (1) ion of B^2-; therefore, for every 4.35E-4 mols A2B that dissolve, you must have 2*4.35E-4 mols A^+ and 4.35E-4 mols B^2-. right?

Then Ksp must be (A^+)^2(B^2-) = (2*4.35E-4)^2(4.35E-4) = ?

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