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Assertion: In sodium formate, both the C...

Assertion: In sodium formate, both the `C - O` bonds have same value `1.27 Å`
Reason : Equal bond length is due to the phenomenon of resonance.

A

If both assertion and reason are true and reason is the correct explanation of assertion

B

If both assertion and reason are true but reason is not the correct explanation of assertion

C

If assertion is true but reason is false

D

If both assertion and reason are false.

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to evaluate the assertion and the reason provided. ### Step 1: Understand the Assertion The assertion states that in sodium formate (HCOONa), both the C-O bonds have the same length of 1.27 Å. **Hint:** Recall the structure of sodium formate and how the bonds are arranged. ### Step 2: Examine the Structure of Sodium Formate Sodium formate consists of a formate ion (HCOO⁻) and sodium ion (Na⁺). The formate ion can be represented as follows: - One structure has a double bond between carbon and one oxygen (C=O) and a single bond with the other oxygen (C-O). - The other structure has the double bond with the other oxygen, and the first oxygen now has a single bond. This indicates that the formate ion has resonance structures. **Hint:** Think about how resonance affects bond lengths and bond orders. ### Step 3: Understand the Concept of Resonance Resonance is a phenomenon where a molecule can be represented by two or more valid Lewis structures. The actual structure of the molecule is a hybrid of these resonance forms. In the case of sodium formate, the resonance leads to an equal distribution of the double bond character between the two C-O bonds. This results in both C-O bonds having the same bond length. **Hint:** Consider how resonance leads to an average bond order. ### Step 4: Conclusion on the Assertion Since both C-O bonds have the same bond length of 1.27 Å due to resonance, the assertion is correct. ### Step 5: Evaluate the Reason The reason states that the equal bond length is due to the phenomenon of resonance. This is indeed true as explained in the previous steps. **Hint:** Reflect on how the explanation of resonance directly supports the assertion. ### Final Conclusion Both the assertion and the reason are correct, and the reason correctly explains the assertion. ### Answer The correct option is: Both assertion and reason are true, and the reason is the correct explanation of the assertion.
To solve the question, we need to evaluate the assertion and the reason provided. ### Step 1: Understand the Assertion The assertion states that in sodium formate (HCOONa), both the C-O bonds have the same length of 1.27 Å. **Hint:** Recall the structure of sodium formate and how the bonds are arranged. ### Step 2: Examine the Structure of Sodium Formate ...
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