Question

<!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--> <!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--> What is the chemical formula of sodium carbonate?

Answer 1

<!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--> <!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--> <!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--> The constituent ions present in sodium carbonate are ${\mathrm{Na}}^{+}$and ${\mathrm{Co}}_3^{2-}$Symbol ${\mathrm{NaCo}}_3$
Charge +1 -2[1 Mark]
To balance the charges, we cross multiply the valencies and get the chemical formula of Sodium Carbonate as ${\mathrm{Na}}_2{\mathrm{Co}}_3$[1 Mark]