Identify the equation for which Keq=

[Cu+]2[S2-]

Cu2S(s) ==> 2Cu^2+ + S^2-

To identify the equation for which Keq = [Cu+]2[S2-], we need to analyze the balanced chemical equation associated with the equilibrium constant expression.

Let's assume the balanced chemical equation is:
aCu+ + bS2- ⇌ cProduct(s)

To determine the values of "a" and "b" and the specific products involved, we need to consider the stoichiometry. Based on the given information, we can infer that the reactants involved are copper ions (Cu+) and sulfide ions (S2-).

The balanced chemical equation would be:
2Cu+ + S2- ⇌ Product(s)

The equilibrium constant expression (Keq) for this equation can be written as follows:
Keq = ([Cu+]2[S2-]) / ([Product(s)])

Therefore, the equation for which Keq = [Cu+]2[S2-] is:
2Cu+ + S2- ⇌ Product(s)

The equation for which Keq is equal to [Cu+]2[S2-] can be identified as:

2Cu+(aq) + S2-(aq) ⇌ Cu2S(s)