Ionic equation...................show only aqueous ions

For ionic equations, it says "Show only aqueous ions".


H2SO4 + MgCO3 ---> MgSO4 + H2O + CO2

becomes (ionic equation)

2H+ + MgCO3 ---> Mg2+ + H2O + CO2

Why has it included MgCO3 in the ionic equation if it is not aqueous?

Well, in an equation, you should always leave these things: weak acids, solids and liquids, and then cut out everything else. Since you keep the Mg2+ on the right, YOU MUST KEEP the Mg on the left, and since MgCO3 doesn't break apart into separable ions, you keep it as MgCO3