Question

When magnesium carbonate, MgCO2, reacts with nitric acid, HNO3, it forms magnesium nitrate, Mg(NO3)2, and carbonic acid, H2CO3. Carbonic acid then breaks down into water and carbon dioxide. Which two types of reactions take place in this process?

A. synthesis and decomposition

B. single-replacement and combustion

C. double-replacement and decomposition

D. double-replacement and combustion

Answer 1

MgCO3 + HNO3 ------> Mg(NO3) +H2CO3
H2CO3 -------> H2O + CO2
So the answer is double-replacement and decomposition i.e. option (C)

Answer 2

Thank you!

Answer 3

mention not dear :)