Unknown008
Jul 1, 2010, 02:53 AM
Clarify your question please.
And, just in case...
A metal carbonate reacts with an acid to form a salt, water and carbon dioxide.
A metal oxide reacts with an acid to form a salt and water.
leif_erikson
Jul 5, 2010, 06:59 PM
OK, your question isn't very clear but just in case you're asking for the reaction that happens between calcium carbonate and carbonic acid, I'll answer. Carbonic acid is acidic meaning that it gives off one or two protons and forms a conjugate base. Let's say that one of it's protons is released. This leaves us with CaCO3, a proton and a bicarbonate anion. If that free proton combines with the carbonate ion (which it will since the carbonate anion has a larger Kb than bicarbonate) , then it forms another bicarbonate anion.
So we now have two bicarbonate ions and one calcium cation. What is the product? It's calcium bicarbonate .