What is the net ionic equation for sulfuric acid and potassium carbonate?

Since both carbonate and sulfate have a double negative charge, they can combine to form the bi-form, which then takes on a single negative charge after a proton attaches. Based on concentrations, that makes things more difficult. The carbonate ions first undergo a transformation into bi-carbonate ions in the sulfuric acid. The carbonic acid then forms as additional acid is introduced. This will oxidize to produce CO2 and water.

H2SO4 + K2CO3 = 2H+ + [SO4] + 2K+ + [CO3]2- 2-

[CO3]2- + 2H+ <=> [HCO3]- + H+ <=> H2CO3 <=> H2O plus CO2 gas

What do sodium bicarbonate, lithium carbonate, potassium carbonate, and sodium carbonate have in common? How should I begin my introduction to these compounds?
There are numerous similarities that could be the subject of an article. For instance

There is probably more but this is what quickly comes to mind.