Home
Class 12
CHEMISTRY
Compound 'X' give positive test with 2,4...

Compound `'X'` give positive test with `2,4` - DNP and with
`I_(2)//NaOH` compound (X) may be :

A

B

C

D

all of these

Text Solution

AI Generated Solution

The correct Answer is:
To identify compound 'X' that gives positive tests with both 2,4-DNP and I2/NaOH, we can follow these steps: ### Step 1: Understand the Tests - **2,4-DNP Test**: This test is used to identify carbonyl compounds (aldehydes and ketones). A positive test results in the formation of a colored precipitate (usually orange or yellow). - **I2/NaOH Test**: This is known as the Iodoform test, which is positive for methyl ketones (compounds with the structure RCOCH3) and for ethanol (ethyl alcohol). A positive test results in the formation of iodoform (CHI3), which is a yellow precipitate. ### Step 2: Identify Possible Structures - Since compound 'X' gives positive results for both tests, it must contain a carbonyl group (C=O). - The possible structures that can give positive results for both tests include: 1. Acetone (CH3COCH3) 2. Acetaldehyde (CH3CHO) 3. Benzyl methyl ketone (C6H5COCH3) ### Step 3: Analyze Each Compound 1. **Acetone (CH3COCH3)**: - Positive for 2,4-DNP test (forms a yellow/orange precipitate). - Positive for Iodoform test (forms iodoform). 2. **Acetaldehyde (CH3CHO)**: - Positive for 2,4-DNP test (forms a yellow/orange precipitate). - Negative for Iodoform test (does not have a methyl ketone structure). 3. **Benzyl methyl ketone (C6H5COCH3)**: - Positive for 2,4-DNP test (forms a yellow/orange precipitate). - Positive for Iodoform test (forms iodoform). ### Step 4: Conclusion - The compounds that can be identified as 'X' are **Acetone (CH3COCH3)** and **Benzyl methyl ketone (C6H5COCH3)**, as both give positive results for the tests mentioned. ### Final Answer Compound 'X' may be **Acetone (CH3COCH3)** or **Benzyl methyl ketone (C6H5COCH3)**. ---

To identify compound 'X' that gives positive tests with both 2,4-DNP and I2/NaOH, we can follow these steps: ### Step 1: Understand the Tests - **2,4-DNP Test**: This test is used to identify carbonyl compounds (aldehydes and ketones). A positive test results in the formation of a colored precipitate (usually orange or yellow). - **I2/NaOH Test**: This is known as the Iodoform test, which is positive for methyl ketones (compounds with the structure RCOCH3) and for ethanol (ethyl alcohol). A positive test results in the formation of iodoform (CHI3), which is a yellow precipitate. ### Step 2: Identify Possible Structures - Since compound 'X' gives positive results for both tests, it must contain a carbonyl group (C=O). ...
Promotional Banner

Similar Questions

Explore conceptually related problems

A compound that gives positive iodoform test is

A compound that gives a positive iodofrm test is :

Observe the following sequence of reations P shows geometrical isomersm.Q gives positive Tollen's test and the oxidation product of Tollen's test followed by acidification is the strongest acid among its all position isomers. R gives positive lab tests with 2,4-DNP, Fehling solution and I_2//NaOH reagents. The compound P can be

Observe the following sequence of reations P shows geometrical isomersm.Q gives positive Tollen's test and the oxidation product of Tollen's test followed by acidification is the strongest acid among its all position isomers. R gives positive lab tests with 2,4-DNP, Fehling solution and I_2//NaOH reagents. What could be the structure of Q ?

Observe the following sequence of reations P shows geometrical isomersm.Q gives positive Tollen's test and the oxidation product of Tollen's test followed by acidification is the strongest acid among its all position isomers. R gives positive lab tests with 2,4-DNP, Fehling solution and I_2//NaOH reagents. Identify the structure of R.

Unknown compound (A) C_(5)H_(10)O give positive test with 2,4 - DNP but negative test with Tollen's reagent. It also give yellow precipitate with I_(2)//NaOH . (A) is :

An organic compound "A" of molecular weight 120, gives Tollen's reagent test and 2,4-DNP test but no Iodoform with I_(2)/OH^(Theta) . The compound "A" may be