Question

Why does cloromethane(CH3Cl) have more dipole moment than chloroform (CHCl3)?

Answer 1

CH3Cl>CH2Cl2>CHCl3>CCl4 .1-This is due to in CH3Cl chlorine is EWG and it is in one direction and no other group present for cancelling/decreasing its dipole moment. 2- In CH2Cl2 dipole moment of H-H atoms and Cl-Cl atoms do not cancel each other because angle are not 180° so they are not linear. 3- In CCl4 dipole moment cancel and become zero because angle between trans position of Cl atom is 180°.