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Solubility and Solubility Product (5A) Practice Test
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Q1
In a blood-chemistry simulation at 37°C, calcium oxalate precipitation is monitored: $\text{CaC}_2\text{O}_4(s) \rightleftharpoons \text{Ca}^{2+} + \text{C}_2\text{O}4^{2-}$ with $K{sp}=2.3\times10^{-9}$. A sample has $\text{Ca}^{2+} = 1.2\times10^{-3},\text{M}$ and $\text{C}_2\text{O}_4^{2-} = 5.0\times10^{-6},\text{M}$. If a clinician administers CaCl$2$ that increases free $\text{Ca}^{2+}$ while oxalate remains constant, which shift in equilibrium is most consistent with maintaining $K{sp}$?
In a blood-chemistry simulation at 37°C, calcium oxalate precipitation is monitored: $\text{CaC}_2\text{O}_4(s) \rightleftharpoons \text{Ca}^{2+} + \text{C}_2\text{O}4^{2-}$ with $K{sp}=2.3\times10^{-9}$. A sample has $\text{Ca}^{2+} = 1.2\times10^{-3},\text{M}$ and $\text{C}_2\text{O}_4^{2-} = 5.0\times10^{-6},\text{M}$. If a clinician administers CaCl$2$ that increases free $\text{Ca}^{2+}$ while oxalate remains constant, which shift in equilibrium is most consistent with maintaining $K{sp}$?