Predict expression for \( \alpha \) in terms of \( K_{eq} \) and concentration C: \( A_2B_3 \, (aq) \rightleftharpoons 2A^{3+} (aq) + 3B^{2-} (aq) \)
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For reactions at equilibrium, the expression for \( \alpha \) depends on the stoichiometry and equilibrium constant. Pay attention to the coefficients in the balanced equation.