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Sagot :
Certainly! Let's analyze the given chemical equation step by step:
[tex]\[ 2 \text{Na} + \text{MgCl}_2 \rightarrow 2 \text{NaCl} + \text{Mg} \][/tex]
### Step-by-Step Analysis:
1. Reactants and Products Identification:
- Reactants: Sodium ([tex]\( \text{Na} \)[/tex]) and Magnesium Chloride ([tex]\( \text{MgCl}_2 \)[/tex])
- Products: Sodium Chloride ([tex]\( \text{NaCl} \)[/tex]) and Magnesium ([tex]\( \text{Mg} \)[/tex])
2. Reactants Breakdown:
- Sodium ([tex]\( \text{Na} \)[/tex]) is an element in its elemental form.
- Magnesium Chloride ([tex]\( \text{MgCl}_2 \)[/tex]) is an ionic compound consisting of Magnesium ([tex]\( \text{Mg} \)[/tex]) and Chlorine ([tex]\( \text{Cl} \)[/tex]) ions.
3. Observing the Reaction:
- In this reaction, sodium ([tex]\( \text{Na} \)[/tex]) takes the place of magnesium ([tex]\( \text{Mg} \)[/tex]) in the compound magnesium chloride ([tex]\( \text{MgCl}_2 \)[/tex]).
- This results in the formation of a new compound, sodium chloride ([tex]\( \text{NaCl} \)[/tex]), and magnesium ([tex]\( \text{Mg} \)[/tex]) is released as a free element.
4. Type of Reaction:
- When one element replaces another element in a compound, the reaction is classified as a Single-Replacement reaction.
- This is because sodium ([tex]\( \text{Na} \)[/tex]) replaces magnesium ([tex]\( \text{Mg} \)[/tex]) in the compound magnesium chloride ([tex]\( \text{MgCl}_2 \)[/tex]).
### Conclusion:
The type of reaction represented by the chemical equation [tex]\( 2 \text{Na} + \text{MgCl}_2 \rightarrow 2 \text{NaCl} + \text{Mg} \)[/tex] is a Single-Replacement reaction.
Thus, the correct answer is:
[tex]\[ \boxed{3} \][/tex]
or Option C: Single-replacement.
[tex]\[ 2 \text{Na} + \text{MgCl}_2 \rightarrow 2 \text{NaCl} + \text{Mg} \][/tex]
### Step-by-Step Analysis:
1. Reactants and Products Identification:
- Reactants: Sodium ([tex]\( \text{Na} \)[/tex]) and Magnesium Chloride ([tex]\( \text{MgCl}_2 \)[/tex])
- Products: Sodium Chloride ([tex]\( \text{NaCl} \)[/tex]) and Magnesium ([tex]\( \text{Mg} \)[/tex])
2. Reactants Breakdown:
- Sodium ([tex]\( \text{Na} \)[/tex]) is an element in its elemental form.
- Magnesium Chloride ([tex]\( \text{MgCl}_2 \)[/tex]) is an ionic compound consisting of Magnesium ([tex]\( \text{Mg} \)[/tex]) and Chlorine ([tex]\( \text{Cl} \)[/tex]) ions.
3. Observing the Reaction:
- In this reaction, sodium ([tex]\( \text{Na} \)[/tex]) takes the place of magnesium ([tex]\( \text{Mg} \)[/tex]) in the compound magnesium chloride ([tex]\( \text{MgCl}_2 \)[/tex]).
- This results in the formation of a new compound, sodium chloride ([tex]\( \text{NaCl} \)[/tex]), and magnesium ([tex]\( \text{Mg} \)[/tex]) is released as a free element.
4. Type of Reaction:
- When one element replaces another element in a compound, the reaction is classified as a Single-Replacement reaction.
- This is because sodium ([tex]\( \text{Na} \)[/tex]) replaces magnesium ([tex]\( \text{Mg} \)[/tex]) in the compound magnesium chloride ([tex]\( \text{MgCl}_2 \)[/tex]).
### Conclusion:
The type of reaction represented by the chemical equation [tex]\( 2 \text{Na} + \text{MgCl}_2 \rightarrow 2 \text{NaCl} + \text{Mg} \)[/tex] is a Single-Replacement reaction.
Thus, the correct answer is:
[tex]\[ \boxed{3} \][/tex]
or Option C: Single-replacement.
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