Answer:
Net ionic equation: [tex]Ca^{2+}(aq.)+CO_{3}^{2-}(aq.)\rightarrow CaCO_{3}(s)[/tex]
Explanation:
Reaction between [tex]Na_{2}CO_{3}[/tex] and [tex]CaCl_{2}[/tex] is an example of double decomposition reaction where each cations and anions of each salt exchange their partners during reaction to form [tex]CaCO_{3}[/tex] and NaCl
[tex]CaCO_{3}[/tex] is an insoluble salt. Hence precipitation of [tex]CaCO_{3}[/tex] has been observed.
Molecular equation: [tex]Na_{2}CO_{3}(aq.)+CaCl_{2}(aq.)\rightarrow 2NaCl(aq.)+CaCO_{3}(s)[/tex]
Total ionic equation:
[tex]2Na^{+}(aq.)+CO_{3}^{2-}(aq.)+Ca^{2+}(aq.)+2Cl^{-}(aq.)\rightarrow CaCO_{3}(s)+2Na^{+}(aq.)+2Cl^{-}(aq.)[/tex]
Here [tex]Na^{+}[/tex] and [tex]Na^{+}[/tex] are spectator ions. Therefore they are eliminated from both side of total ionic equation to get net ionic equation.
Net ionic equation: [tex]Ca^{2+}(aq.)+CO_{3}^{2-}(aq.)\rightarrow CaCO_{3}(s)[/tex]
