Question

When magnesium carbonate, mgco2, reacts with nitric acid, hno3, magnesium nitrate and carbonic acid form. carbonic acid then breaks down into water and carbon dioxide. what two types of reactions take place in this process?

Answer 1

Double-replacement and decomposition. (C)

Answer 2

Explanation:

Magnesium carbonate reacts with nitric acid to give magnesium nitrate and carbonic acid.

$MgCO_3(aq)+2HNO_3(aq)\rightarrow Mg(NO_3)_2(aq)+H_2CO_3(aq)$

This type of reaction is termed as double displacement reaction, in which ions of compounds changes their positions with each other to produce the new products.

$H_2CO_3(aq)\rightarrow H_2O(l)+CO_2(g)$

This type of reaction is termed as decomposition reaction, in which a compound breaks down into two or more smaller compounds.