Question
If CaCl2 (aq) + Na2SO4 (aq) react , do precipitate formed? If sure then write the balanced net ionic equation for the precipitate formed.
Answers
GPT-4o mini
When calcium chloride (CaCl₂) and sodium sulfate (Na₂SO₄) are mixed in aqueous solution, a double displacement reaction occurs. One of the products of this reaction is calcium sulfate (CaSO₄), which is insoluble in water and will precipitate out of the solution.
The balanced molecular equation for the reaction is:
\[
CaCl_2 (aq) + Na_2SO_4 (aq) \rightarrow CaSO_4 (s) + 2 NaCl (aq)
\]
To write the net ionic equation, we first need to identify the ions in solution:
- \(CaCl_2\) dissociates into \(Ca^{2+}\) and \(2Cl^{-}\)
- \(Na_2SO_4\) dissociates into \(2Na^{+}\) and \(SO_4^{2-}\)
Now, we rewrite the full ionic equation:
\[
Ca^{2+} (aq) + 2Cl^{-} (aq) + 2Na^{+} (aq) + SO_4^{2-} (aq) \rightarrow CaSO_4 (s) + 2Na^{+} (aq) + 2Cl^{-} (aq)
\]
Next, we can cancel the spectator ions (\(2Na^{+}\) and \(2Cl^{-}\)), which do not participate in the formation of the precipitate.
The balanced net ionic equation for the formation of the precipitate calcium sulfate is:
\[
Ca^{2+} (aq) + SO_4^{2-} (aq) \rightarrow CaSO_4 (s)
\]
Thus, a precipitate of calcium sulfate (CaSO₄) is formed from the reaction of aqueous calcium chloride and aqueous sodium sulfate.
The balanced molecular equation for the reaction is:
\[
CaCl_2 (aq) + Na_2SO_4 (aq) \rightarrow CaSO_4 (s) + 2 NaCl (aq)
\]
To write the net ionic equation, we first need to identify the ions in solution:
- \(CaCl_2\) dissociates into \(Ca^{2+}\) and \(2Cl^{-}\)
- \(Na_2SO_4\) dissociates into \(2Na^{+}\) and \(SO_4^{2-}\)
Now, we rewrite the full ionic equation:
\[
Ca^{2+} (aq) + 2Cl^{-} (aq) + 2Na^{+} (aq) + SO_4^{2-} (aq) \rightarrow CaSO_4 (s) + 2Na^{+} (aq) + 2Cl^{-} (aq)
\]
Next, we can cancel the spectator ions (\(2Na^{+}\) and \(2Cl^{-}\)), which do not participate in the formation of the precipitate.
The balanced net ionic equation for the formation of the precipitate calcium sulfate is:
\[
Ca^{2+} (aq) + SO_4^{2-} (aq) \rightarrow CaSO_4 (s)
\]
Thus, a precipitate of calcium sulfate (CaSO₄) is formed from the reaction of aqueous calcium chloride and aqueous sodium sulfate.