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?
Question 2 options:

single-replacement and combustion

double-replacement and decomposition

synthesis and decomposition

double-replacement and combustion

Answer 1

It was not too sure but single replacement

Answer 2

double displacement and decomposition