Question #a9d9d

1 Answer
Dec 22, 2017

Molecular Na2CO3+2HCl2NaCl+H2O+CO2

Complete Ionic 2Na+(aq)+CO23(aq)+2H+(aq)+2Cl(aq)2Na+(aq)+2Cl(aq)+H2O(l)+CO2(g)

Net Ionic 2Na+(aq)+2H+(aq)2NaCl(aq)

Explanation:

The molecular equation is the overall balanced equation, including states:

Na2CO3(aq)+2HCl(aq)2NaCl(aq)+H2O(l)+CO2(g)

To write the complete ionic equation , you break all (aq) compounds from the molecular equation into their individual ions:

2Na+(aq)+CO23(aq)+2H+(aq)+2Cl(aq)2Na+(aq)+2Cl(aq)+H2O(l)+CO2(g)

We know that CO23 has a 2- charge, because it is bonded to two Na+ ions, which each have a positive charge. Thus it must have a 2- charge to balance out the 2+ and form the neutral Na2CO3

To write the net ionic equation , you remove all of the spectator ions (ions which do not take part in the reaction) from your complete ionic equation:

2Na+(aq)+2H+(aq)2NaCl(aq)