Chemistry

Chemistry

Problem

The reaction of aqueous calcium chloride with aqueous sodium carbonate is represented by the balanced molecular equation CaCl2(aq) + Na2CO3(aq) → CaCO3(s) + 2 NaCl(aq). Which of the following is the correct net ionic equation for this reaction? a) Na+(aq)+Cl−(aq)→NaCl(s)\text{Na}^+(aq)+\text{Cl}^-(aq)\rightarrow\text{NaCl}(s) b) Ca2+(aq)+CO32−(aq)→CaCO3(s)\text{Ca}^{2+}(aq)+\text{CO}_{3}^{2-}(aq)\rightarrow\text{CaCO}_{3}(s) c) Ca2+(aq)+2 Cl−(aq)+2 Na+(aq)+CO32−(aq)→CaCO3(s)+2 Na+(aq)+2 Cl−(aq)\text{Ca}^{2+}(aq)+2\,\text{Cl}^-(aq)+2\,\text{Na}^+(aq)+\text{CO}_{3}^{2-}(aq)\rightarrow\text{CaCO}_{3}(s)+2\,\text{Na}^+(aq)+2\,\text{Cl}^-(aq) d) Ca2+(aq)+2 Cl−(aq)→CaCl2(s)\text{Ca}^{2+}(aq)+2\,\text{Cl}^-(aq)\rightarrow\text{CaCl}_{2}(s)

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