Question

caco₃ → cao + co₂
the reaction above is classified as
a decomposition
b single displacement
c combustion reaction
d double displacement
e synthesis

Explanation:

A decomposition reaction is a type of chemical reaction where one reactant breaks down into two or more products. In the given reaction \(CaCO_3
ightarrow CaO + CO_2\), calcium carbonate (\(CaCO_3\)) is the single reactant that decomposes into calcium oxide (\(CaO\)) and carbon dioxide (\(CO_2\)).

• A single - displacement reaction has the form \(A+BC

ightarrow AC + B\).

• A combustion reaction usually involves a substance reacting with oxygen, often producing carbon dioxide and water (for hydrocarbon combustion).
• A double - displacement reaction has the form \(AB + CD

ightarrow AD+CB\).

• A synthesis reaction has the form \(A + B

ightarrow AB\).

Answer:

a. decomposition