Sure, let's identify the type of reaction for each given chemical equation.
1. For the reaction [tex]\( A + B \rightarrow AB \)[/tex]:
- This reaction involves two reactants (A and B) combining to form a single product (AB).
- This is known as a Combination or Synthesis reaction, where multiple reactants combine to form a single product.
[tex]\[
\boxed{\text{Combination}}
\][/tex]
2. For the reaction [tex]\( AB \rightarrow A + B \)[/tex]:
- In this reaction, a single compound (AB) breaks down into two simpler products (A and B).
- This type of reaction is called a Decomposition reaction, where a compound decomposes into two or more simpler substances.
[tex]\[
\boxed{\text{Decomposition}}
\][/tex]
3. For the reaction Hydrocarbon [tex]\( + O_2 \rightarrow CO_2 + H_2O \)[/tex]:
- This reaction involves a hydrocarbon reacting with oxygen to produce carbon dioxide (CO_2) and water (H_2O).
- Such reactions are called Combustion reactions, especially when organic compounds react with oxygen releasing heat and light.
[tex]\[
\boxed{\text{Combustion}}
\][/tex]
4. For the reaction [tex]\( AB + CD \rightarrow AD + CB \)[/tex]:
- Here, two compounds (AB and CD) react, and the cations and anions exchange partners to form two new compounds (AD and CB).
- This is known as a Double Displacement or Metathesis reaction, where parts of two compounds exchange places.
[tex]\[
\boxed{\text{Double Displacement}}
\][/tex]
So, the types of reactions are:
[tex]\[
\begin{array}{l}
A+B \rightarrow AB: \boxed{\text{Combination}} \\
AB \rightarrow A+B: \boxed{\text{Decomposition}} \\
\text{Hydrocarbon} + O_2 \rightarrow CO_2 + H_2O: \boxed{\text{Combustion}} \\
AB + CD \rightarrow AD + CB: \boxed{\text{Double Displacement}}
\end{array}
\][/tex]
