QuestionAugust 5, 2025

Station 4 , Precipitation Reactions. Which net ionic equation correctly represents CaCl_(2)(aq)+Na_(2)CO_(3)(aq) arrow CaCO_(3)(s)+2NaCl(aq) 2Na^+(aq)+CO_(3)^2-(aq)arrow Na_(2)CO_(3)(s) CaCl_(2)(aq)arrow Ca^2+(aq)+2Cl^-(aq) CO_(3)^2-(aq)arrow C(s)+O_(2)(g) Ca^2+(aq)+CO_(3)^2-(aq)arrow CaCO_(3)(s)

Station 4 , Precipitation Reactions. Which net ionic equation correctly represents CaCl_(2)(aq)+Na_(2)CO_(3)(aq) arrow CaCO_(3)(s)+2NaCl(aq) 2Na^+(aq)+CO_(3)^2-(aq)arrow Na_(2)CO_(3)(s) CaCl_(2)(aq)arrow Ca^2+(aq)+2Cl^-(aq) CO_(3)^2-(aq)arrow C(s)+O_(2)(g) Ca^2+(aq)+CO_(3)^2-(aq)arrow CaCO_(3)(s)
Station 4 , Precipitation Reactions. Which net ionic equation correctly represents CaCl_(2)(aq)+Na_(2)CO_(3)(aq) arrow CaCO_(3)(s)+2NaCl(aq) 2Na^+(aq)+CO_(3)^2-(aq)arrow Na_(2)CO_(3)(s) CaCl_(2)(aq)arrow Ca^2+(aq)+2Cl^-(aq) CO_(3)^2-(aq)arrow C(s)+O_(2)(g) Ca^2+(aq)+CO_(3)^2-(aq)arrow CaCO_(3)(s)

Solution
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Answer

Ca^{2+}(aq) + CO_3^{2-}(aq) \rightarrow CaCO_3(s) Explanation 1. Identify the ions in solution CaCl_2(aq) dissociates into Ca^{2+}(aq) and 2Cl^{-}(aq). Na_2CO_3(aq) dissociates into 2Na^{+}(aq) and CO_3^{2-}(aq). 2. Determine the precipitate CaCO_3(s) is the solid precipitate formed in the reaction. 3. Write the net ionic equation The net ionic equation includes only the ions that form the precipitate: Ca^{2+}(aq) + CO_3^{2-}(aq) \rightarrow CaCO_3(s).

Explanation

1. Identify the ions in solution<br /> $CaCl_2(aq)$ dissociates into $Ca^{2+}(aq)$ and $2Cl^{-}(aq)$. $Na_2CO_3(aq)$ dissociates into $2Na^{+}(aq)$ and $CO_3^{2-}(aq)$.<br />2. Determine the precipitate<br /> $CaCO_3(s)$ is the solid precipitate formed in the reaction.<br />3. Write the net ionic equation<br /> The net ionic equation includes only the ions that form the precipitate: $Ca^{2+}(aq) + CO_3^{2-}(aq) \rightarrow CaCO_3(s)$.
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