Question 5 Page 69 - Chapter 4 Class 10 - Carbon and its Compounds

How would you name the following compounds?

Answer:

ANS: 

1). Since the structure has 2 carbon atoms connected only by single bonds , hence we will call it ‘ ethane ’.

• A Br atom is attached to the chain. 
• We start counting from both ends of the chain. From one end we get, 2 Bromo-ethane , and from the other end we get, 1-Bromo ethane.
• We always take the count where the functional group has the least count (position).
• Hence, the compound is named as, 1-Bromo ethane.
•  

2). There is a single carbon atom hence, we use Meth and an aldehyde group present, so we add - al, combining we get Methanal.

3). 6 carbon atoms are present, hence we use ‘hex’. 

• There is a Triple bond at the 1st position . Why not the 6th position? Because we always take the count where the functional group has the least count (position).
• Hence, we get Hex-1-yne.