Question

In a lab experiment on Solubility, I mixed Calcium Chloride and Sodium Oxalate together. A precipitate formed. I then added Nitric Acid. The precipitate dissolved.

What is the net ionic equation for the reaction that occurs when nitric acid (which involves one of the species in the first reaction) is added to the beaker?

I have: CaC2O4 +2HNO3 = Ca(NO3)2 +H2C2O4

But, I'm not sure if this is net ionic.

Answer 1

molecular equation is:
CaC2O4 (s) + 2 HNO3 (aq) --> Ca(NO3)2 (aq) + H2C2O4 (aq)




To get complete ionic equation, break aqueous components into respective ions
So, the complete ionic equation is
CaC2O4 (s) + 2 H+ (aq) + 2 NO3- (aq) --> Ca2+ (aq) + 2 NO3- (aq) + 2 H+ (aq) + C2O42- (aq)

To get net ionic equation, remove the common ions from both sides
So, the net ionic equation is
CaC2O4 (s) --> Ca2+ (aq) + C2O42- (aq)

This is the answer:
CaC₂O₄ (s) --> Ca²⁺ (aq) + C₂O₄^2- (aq)