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The reaction Pb(NO3)2 + 2NaI → 2NaNO3 + PbI2 ↓ is classified as
- a)Combination reaction
- b)Decomposition reaction
- c)Single replacement reaction
- d)Double replacement reaction
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
The reaction Pb(NO3)2 + 2NaI → 2NaNO3 + PbI2 ↓ is classified asa)Combi...
In this reaction, two new substances lead iodide, and sodium nitrate are formed by an interchange of radicals in lead nitrate and sodium iodide.
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Most Upvoted Answer
The reaction Pb(NO3)2 + 2NaI → 2NaNO3 + PbI2 ↓ is classified asa)Combi...
**Double Replacement Reaction**
A double replacement reaction, also known as a double displacement or metathesis reaction, is a type of chemical reaction where two compounds exchange ions to form new compounds. In this reaction, the cations and anions of two different compounds switch places, resulting in the formation of two new compounds.
**Explanation:**
Let's analyze the given reaction:
Pb(NO3)2 + 2NaI → 2NaNO3 + PbI2 ↓
- **Pb(NO3)2**: This is lead(II) nitrate, which is composed of the lead ion (Pb^2+) and the nitrate ion (NO3^-).
- **2NaI**: This is sodium iodide, which is composed of the sodium ion (Na^+) and the iodide ion (I^-).
When these two compounds react, the following exchange of ions takes place:
- The lead ion (Pb^2+) from lead(II) nitrate combines with the iodide ion (I^-) from sodium iodide to form lead(II) iodide (PbI2). This is represented by the precipitation symbol (↓), indicating the formation of a solid product.
- The sodium ion (Na^+) from sodium iodide combines with the nitrate ion (NO3^-) from lead(II) nitrate to form sodium nitrate (NaNO3).
Therefore, the reaction can be written as:
Pb(NO3)2 + 2NaI → 2NaNO3 + PbI2 ↓
Since the cations and anions of two different compounds have exchanged places to form new compounds, this reaction is classified as a **double replacement** reaction.
A double replacement reaction, also known as a double displacement or metathesis reaction, is a type of chemical reaction where two compounds exchange ions to form new compounds. In this reaction, the cations and anions of two different compounds switch places, resulting in the formation of two new compounds.
**Explanation:**
Let's analyze the given reaction:
Pb(NO3)2 + 2NaI → 2NaNO3 + PbI2 ↓
- **Pb(NO3)2**: This is lead(II) nitrate, which is composed of the lead ion (Pb^2+) and the nitrate ion (NO3^-).
- **2NaI**: This is sodium iodide, which is composed of the sodium ion (Na^+) and the iodide ion (I^-).
When these two compounds react, the following exchange of ions takes place:
- The lead ion (Pb^2+) from lead(II) nitrate combines with the iodide ion (I^-) from sodium iodide to form lead(II) iodide (PbI2). This is represented by the precipitation symbol (↓), indicating the formation of a solid product.
- The sodium ion (Na^+) from sodium iodide combines with the nitrate ion (NO3^-) from lead(II) nitrate to form sodium nitrate (NaNO3).
Therefore, the reaction can be written as:
Pb(NO3)2 + 2NaI → 2NaNO3 + PbI2 ↓
Since the cations and anions of two different compounds have exchanged places to form new compounds, this reaction is classified as a **double replacement** reaction.
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The reaction Pb(NO3)2 + 2NaI → 2NaNO3 + PbI2 ↓ is classified asa)Combi...
The exchange of ions between two compounds will lead to a double displacement reaction
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The reaction Pb(NO3)2 + 2NaI → 2NaNO3 + PbI2 ↓ is classified asa)Combination reactionb)Decomposition reactionc)Single replacement reactiond)Double replacement reactionCorrect answer is option 'D'. Can you explain this answer? for Class 10 2025 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about The reaction Pb(NO3)2 + 2NaI → 2NaNO3 + PbI2 ↓ is classified asa)Combination reactionb)Decomposition reactionc)Single replacement reactiond)Double replacement reactionCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 10 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The reaction Pb(NO3)2 + 2NaI → 2NaNO3 + PbI2 ↓ is classified asa)Combination reactionb)Decomposition reactionc)Single replacement reactiond)Double replacement reactionCorrect answer is option 'D'. Can you explain this answer?.
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