sorry about the diagram it didn't come out. structural formula of 1-chloropropane an 2-chloropropane which are the equivalent hydrogens.

No problem! I can help you with that. To determine the structural formula of 1-chloropropane and 2-chloropropane, we need to understand their molecular structures.

1-Chloropropane:
The prefix "1-" indicates that the chlorine atom is bonded to the first carbon atom in the molecule. Propane consists of three carbon atoms in a row, so the structure of 1-chloropropane can be represented as:

CH3-CH2-CH2-Cl

In this structure, the first carbon atom (C1) is the one bonded directly to the chlorine atom.

2-Chloropropane:
Similarly, the prefix "2-" indicates that the chlorine atom is bonded to the second carbon atom in the molecule. The structure of 2-chloropropane can be represented as:

CH3-CHCl-CH3

In this structure, the second carbon atom (C2) is the one bonded directly to the chlorine atom.

Equivalent hydrogens:
Equivalent hydrogens are hydrogens that have the same chemical environment within a molecule. In other words, they are indistinguishable from one another due to symmetry or identical bonding positions.

For both 1-chloropropane and 2-chloropropane, the equivalent hydrogens are the hydrogens attached to the other carbon atoms in the molecule that are not bonded to the chlorine atom. In 1-chloropropane, the equivalent hydrogens are the three hydrogens attached to C2 and C3 (CH3). In 2-chloropropane, the equivalent hydrogens are the six hydrogens attached to C1, C3, and C4 (CH3 and CH2).

To visually represent this, I will use an asterisk (*) to indicate the equivalent hydrogens:

1-Chloropropane:
CH3-CH2-CH2-Cl
* * *

2-Chloropropane:
CH3-CHCl-CH3
* * * * *

I hope this helps! Let me know if you have any further questions.