CaCO3 + 2HCl→CaCl2+H2CO3 is an example of which type of reaction? Question 2 options: Single-Displacement Double-Displacement Combustion Decomposition

Double replacement:

Explanation:

Double replacement:

It is the reaction in which two compound exchange their ions and form new compounds.

AB + CD → AD +CB

Chemical equation:

CaCO₃ + 2HCl    →      CaCl₂ + H₂CO₃

The given chemical reaction is example of double displacement reaction. In this type of reaction cation and anion of both reactant exchange with each other. We can see carbonate ion of calcium carbonate combine with hydrogen ion of HCl and form carbonic acid while chloride ions of HCl combine with calcium ion and form calcium chloride.

All other options are incorrect because,

Single replacement:

It is the reaction in which one elements replace the other element in compound.

AB + C → AC + B

Decomposition reaction:

It is the reaction in which one reactant is break down into two or more product.

AB → A + B

Combustion reaction:

In combustion reaction substances are burned in the presence of oxygen.

its going to be mutualism cuz they both benefit from the relationship.

~batmans wife dun dun