# What type of chemical reaction is sulfuric acid with calcium carbonate?

$$\ce{H2SO4 + CaCO3 -> H2CO3 + CaSO4}$$

I thought it would be a double replacement and also a decomposition reaction because $\ce{H2CO3}$ immediately breaks down to $\ce{H2O}$ and $\ce{CO2}$.

• The decomposition part is not portrayed in your equation so you can't say that the equation contains decomposition.
– DHMO
Jan 18 '17 at 23:44