# Magnesium bicarbonate dissociation products

What is the equation for $\ce{Mg(HCO3)2}$ dissociation? Are there more steps because it's a complex substance? Could the possible products be $\ce{MgHCO3+ + HCO3-}$?

Typically dissociation refers to the ions that are formed when a substance dissolves. The most common solvent is water. So in aqueous solution: $$\ce{Mg(HCO3)2(s) -> Mg^{2+} + 2HCO3^{-} }$$ The bicarbonate will also form very minor amounts of other aqueous species: $$\ce{HCO3^{-} <-> H^+ + CO3^{2-}}$$ $$\ce{HCO3^{-} + H^+ <-> H2CO3}$$ $$\ce{H2CO3 <-> CO2 + H2O}$$ The carbon dioxide formed in the last reaction can outgas from the solution as well.