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A: [tex]\( H_2 + Cl_2 \rightarrow 2 HCl \)[/tex]
B: [tex]\( CH_4 + 2 O_2 \rightarrow CO_2 + 2 H_2O \)[/tex]

Equation A represents a [tex]\(\square\)[/tex] reaction, and equation B represents a [tex]\(\square\)[/tex] reaction.

Sagot :

GinnyAnswer
To determine the types of reactions represented by equations A and B, we will analyze the chemical equations provided:

### Equation A: [tex]\( H_2 + Cl_2 \rightarrow 2 HCl \)[/tex]
- In this reaction, hydrogen gas (H₂) and chlorine gas (Cl₂) combine to form hydrochloric acid (HCl).
- When two or more simple substances combine to form a more complex substance, this type of reaction is known as a synthesis reaction.

### Equation B: [tex]\( CH_4 + 2 O_2 \rightarrow CO_2 + 2 H_2O \)[/tex]
- In this reaction, methane (CH₄) reacts with oxygen (O₂) to produce carbon dioxide (CO₂) and water (H₂O).
- When a hydrocarbon reacts with oxygen, producing carbon dioxide and water, this type of reaction is known as a combustion reaction.

Therefore, the reactions can be categorized as follows:
- Equation A represents a synthesis reaction.
- Equation B represents a combustion reaction.

Hence, the complete statements are:
- Equation A represents a synthesis reaction.
- Equation B represents a combustion reaction.
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