Posted by gold on Thursday, October 13, 2011 at 11:43am.
Balanced molecular equation is this.
MgCl2(aq) + K2CO3(aq) ==> MgCO3(s) + 2KCl(aq)
Balanced full ionic equation is this.
Rules: If an insoluble material write as molecule. If a gas write as molecule. If a weak electrolyte write as molecule. Write all others as ions.
Mg^2+(aq) + 2Cl^-(aq) + 2K^+(aq) + CO3^2-(aq) ==> MgCO3(s) + 2K^+(aq) + 2Cl^-(aq)
Now cancel ions common to both sides. The result will be the net ionic equation.
2K^+ cancel; 2Cl^- cancel.
Mg^2+(aq) + CO3^2-(aq) ==> MgCO3(s)
Use these principles to do the second one.
The molecular equation is this.
H2SO4(aq) + 2NaOH(aq) ==> Na2SO4(aq) + 2H2O(l)
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