Question

arrange the following molecules according to tje strength of their dispersion forces

DO Question 3 Arrange the following molecules according to the strength of their dispersion forces. For this question, 1 - Largest dispersion force and 6 - Smallest dispersione сн. Structure 1 CH-CH-C-CH-CH, Structure 4 CHE CH, CH, Structure 2 CH-CH2-CH2-CH2-CHA Structure 5 CH-CH2-CH2-CH-CH-CH-CH, CH, сн. Structure 3 CH-C-CH, Structure 6 CH, CH, CH, CH, Structure 1 Choose Structure 2 Choose Structure 3 Choose Structure Choose Structures [Choose Structure Choo

Answer 1

The the two main factors that affect the dispersion forces in the molecule are

1) The size of the molecule- As the size of molecule increases the dispersion forces will be stronger. Therefore, larger molecules will have stornger disprsion forces as compared to smaller ones.

2) Branching of molecule decreases the dispersion forces in the molecule.

On this basis the correct order of compounds from largest dispersion forces to smaller dispersion forces is

1 = Structure 5, 2 = structure 1, 3 = Structure 2, 4 = structure 3, 5 = Structure 6, 6 = structure 4