Q. 12.42 - An Introduction to General, Organic, and Biological Chemistry

Question

Which of the following will give a positive Tollens test? ($12.4$)

a. $1-propanol$

b. $2-propanol$

c. hexanal

Step-by-Step Solution

Answer

(a) The $1-propanol$ will not give a positive Tollens test.

(b) The $2-propanol$ will not give a positive Tollens test.

(c) The hexanal will give a positive Tollens test.

Part (a) Step 1 : Given information

We need to find that whether the $1-propanol$ will give tollens test or not

Part (a) Step 2: Explanation

We know that

Tollens test is given by aldehydes.

And as the given compound is alcohol

Therefore, 

The given compound will not give Tollens test.

Part (b) Step 1 : Given information

We need to find that whether the $2-propanol$ will give tollens test or not 

Part (b) Step 2: Explanation

We know that

Tollens test is given by aldehydes.

And as the given compound is alcohol

Therefore, 

The given compound will not give Tollens test.

Part (c) Step 1 : Given information

We need to find that whether the hexanal will give tollens test or not 

Part (c) Step 2: Explanation

We know that

Tollens test is given by aldehydes.

And as the given compound is an aldehyde 

Therefore, 

The given compound will give Tollens test.