what is IUPAC name of ch3-ch2-ch2-ch2=ch2 ???
I think you meant to write this
ch3-ch2-ch2-ch=ch2
1-pentene CH2CH(CH2)2CH3
1-Pentene or Pent-1-ene
To determine the IUPAC name of the molecule CH3-CH2-CH2-CH2=CH2, follow these steps:
1. Identify the longest continuous carbon chain in the molecule. In this case, it is a 5-carbon chain.
2. Name the chain according to the number of carbon atoms. In this case, it is pentane.
3. Locate the double bond in the molecule. It is between the fourth and fifth carbon atoms.
4. Indicate the position of the double bond by specifying the location of the first carbon atom involved in the bond. In this case, it is at the fourth carbon atom.
5. Use the suffix "-ene" to denote the presence of a double bond.
Putting it all together, the IUPAC name for CH3-CH2-CH2-CH2=CH2 is 4-pentene.