Certainly! Let’s identify each type of chemical reaction step-by-step:
1. Synthesis Reaction:
- Equation: [tex]\( A + B \rightarrow AB \)[/tex]
- Explanation: In a synthesis reaction, two or more reactants combine to form a single product. Here, reactants [tex]\( A \)[/tex] and [tex]\( B \)[/tex] combine to form the product [tex]\( AB \)[/tex].
- Reaction Type: Synthesis
2. Decomposition Reaction:
- Equation: [tex]\( AB \rightarrow A + B \)[/tex]
- Explanation: In a decomposition reaction, a single compound breaks down into two or more simpler substances. Here, compound [tex]\( AB \)[/tex] decomposes into individual elements [tex]\( A \)[/tex] and [tex]\( B \)[/tex].
- Reaction Type: Decomposition
3. Combustion Reaction:
- Equation: Hydrocarbon [tex]\( + O_2 \rightarrow CO_2 + H_2O \)[/tex]
- Explanation: In a combustion reaction, a hydrocarbon reacts with oxygen [tex]\( O_2 \)[/tex] to produce carbon dioxide [tex]\( CO_2 \)[/tex] and water [tex]\( H_2O \)[/tex]. This type of reaction typically releases a large amount of energy in the form of heat and light.
- Reaction Type: Combustion
4. Double Displacement Reaction:
- Equation: [tex]\( AB + CD \rightarrow AD + CB \)[/tex]
- Explanation: In a double displacement reaction, the ions of two compounds exchange places to form two new compounds. Here, the cation [tex]\( A \)[/tex] from [tex]\( AB \)[/tex] pairs with the anion [tex]\( D \)[/tex] from [tex]\( CD \)[/tex], and the cation [tex]\( C \)[/tex] from [tex]\( CD \)[/tex] pairs with the anion [tex]\( B \)[/tex] from [tex]\( AB \)[/tex].
- Reaction Type: Double displacement
Summarizing the types for each given reaction:
[tex]\[
\begin{array}{l}
A + B \rightarrow AB: \text{Synthesis} \\
AB \rightarrow A + B: \text{Decomposition} \\
\text{Hydrocarbon} + O_2 \rightarrow CO_2 + H_2O: \text{Combustion} \\
AB + CD \rightarrow AD + CB: \text{Double displacement}
\end{array}
\][/tex]
In conclusion:
- [tex]\( A + B \rightarrow AB \)[/tex] is a Synthesis reaction.
- [tex]\( AB \rightarrow A + B \)[/tex] is a Decomposition reaction.
- Hydrocarbon [tex]\( + O_2 \rightarrow CO_2 + H_2O \)[/tex] is a Combustion reaction.
- [tex]\( AB + CD \rightarrow AD + CB \)[/tex] is a Double displacement reaction.
