Mg(OH)2 + CaCO3 + H2O = Mg(HCO3)2 + Ca(OH)2

[easypeasyac]

Hello;
According to balance chemical equation if I put magnesium hydroxide and calcium carbonate in water there is a reaction and magnesium bicarbonate and calcium hydroxide formed.

Does this reaction occur under normal conditions just with distilled water and magnesium bicarbonate formed?


If yes;

Magnesium hydroxide and calcium carbonate are almost insoluble in water. But magnesium bicarbonate very soluble in water.

I want to learn that if I put magnesium hydroxide and calcium carbonate in distilled water and get water soluble magnesium?

Thank you.

[ChenBeier]

First the equation is not balanced, second why do you think this should happen. To get hydrogencarbonate excess of carbondioxide is needed.
This works without and with the calcium already.
Can be find in stalactite caves.

[easypeasyac]

Thank you @ChenBeier.

Sorry I think balanced equation is
Mg(OH)₂ + 2 CaCO₃ + 2 H₂O = Mg(HCO₃)₂ + 2 Ca(OH)₂

I want to learn that according to this equation can I get magnesium hydrogencarbonate without cabondioxide?

[ChenBeier]

I dont think so, because the equilibrium will be on left side. Two precipitate on left and on right side only one.
Check the solubility constant from each product.
Also hydrogencarbonate is slightly acidic. Calcium hydroxide strong alcaline, this will neutralise.