For this problem, we’re being asked to determine the solubility of the insoluble salt MX2.
Since the MX2 is an ionic compound, it forms ions when dissociating in water. The dissociation of MX2 in water is as follows:
Assuming M has a charge of +2. The X ion, X–, has a charge of –1.
MX2(s) ⇌ M2+(aq) + 2 X–(aq)
We can construct an ICE table for the dissociation of MX2.
Remember that solids are ignored in the ICE table and Ksp expression.
What is the solubility of the insoluble salt MX2?
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