Home
Class 12
CHEMISTRY
Assertion : Alkyl iodide can be prepared...

Assertion : Alkyl iodide can be prepared by treating alkyl chloride/bromide with Nal in acetone .
Reason : NaCI/NaBr are soluble in acetone while Nal is not .

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 reasonb is false

D

If both assertion and reason are false.

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we will analyze the assertion and the reason provided, and determine their validity. ### Step-by-Step Solution: 1. **Understanding the Assertion**: - The assertion states that alkyl iodide can be prepared by treating alkyl chloride or bromide with NaI in acetone. This is indeed true. The reaction involved is known as the Finkelstein reaction, where alkyl halides (chlorides or bromides) are converted to alkyl iodides using sodium iodide (NaI). 2. **Understanding the Reason**: - The reason states that NaCl and NaBr are soluble in acetone while NaI is not. This statement is incorrect. In fact, NaI is soluble in acetone, while NaCl and NaBr are not soluble. The solubility of NaI in acetone is crucial for the Finkelstein reaction to proceed, as it allows for the displacement of the halide ion (Cl or Br) by the iodide ion (I). 3. **Conclusion**: - Since the assertion is true (alkyl iodide can indeed be prepared using NaI in acetone), but the reason is false (NaI is soluble in acetone, not the other way around), we conclude that the correct answer is: **Assertion is true, but Reason is false**. ### Final Answer: - Assertion: True - Reason: False - Conclusion: Assertion is true, but Reason is false. ---
To solve the question, we will analyze the assertion and the reason provided, and determine their validity. ### Step-by-Step Solution: 1. **Understanding the Assertion**: - The assertion states that alkyl iodide can be prepared by treating alkyl chloride or bromide with NaI in acetone. This is indeed true. The reaction involved is known as the Finkelstein reaction, where alkyl halides (chlorides or bromides) are converted to alkyl iodides using sodium iodide (NaI). 2. **Understanding the Reason**: ...
Promotional Banner

Similar Questions

Explore conceptually related problems

Assertion: Aryl iodides can be prepared by reaction of arenes with iodine in the presence of an oxidising agent. Reason: Oxidising agent oxidises I_(2) into HI.

Assertion : Alkyl benzene is not prepared by Friedel Craft alkylation of benzene. Reason : Grignard reagents react with hydroxyl group

Assertion : Gabriel phthalimide synthesis can be used to convert alkyl chlorides into primary amines . Reason : With proper choice of reagent , Gabriel synthesis can used to prepare primary , secondary and tertiary amines .

What happens when (+)2- iodobutane is treated with Nal in acetone?

Hunsdiecker reaction is used to prepare alkyl chloride and alkyl bromide starting from

Assertion : Acetaldehyde is more reactive than acetone in nucleophilic addition reactions. Reason Two alkyl groups in acetone reduce the electrophilicity of the carbon.

Assertion : Permanent hardness of water can be removed by using washing soda. Reason : Washing soda reacts with soluble calcium and magnesium chlorides and sulphates in hard water to form insoluble carbonates.

Assertion (A) Gabriel phthalimide reaction can be used to prepare aryl and alkyl amines. Reason (R ) Aryl halides have same reactivity as alkyl halides towards nucleophilic substitution reactions.

Consider the following statements and pick out the wrong one. (1)The solubility, thermal stability and the basic character of the hydroxides of alkaline earth metals increases from Mg(OH)_2 to Ba(OH)_2 (2)The dehydration of hydrated chlorides, bromides and iodides of Ca,Sr and Ba can be achieved on heating. (3)The chlorides of both beryllium and aluminium are soluble in organic solvents and are strong lewis acids.

Assertion ( A) Phosphorus chlorides ( tri and penta) are preferred over thionyl chloride for the preparation of alkyl chlorides from alcohols. Reason (R) Phosphorus chlorides give pure alkyl halides.