The structural formulas for two isomers of 1, 2-dichloroethene are shown above. Which of the two liquids has the higher equilibrium vapor pressure at 20 degrees Celsius and why? A) the cis-isomer, because it has dipole-dipole interactions, whereas the trans-isomer has only 1 London dispersion forces.
B) the cis-isomer, because it has only London dispersion forces, whereas the trans-isomer also has dipole-dipole interactions
C) the trans-isomer, because it has dipole-dipole interactions, whereas the cis-isomer has only 1 London dispersion forces
D) the trans-isomer, because it has only 1 London dispersion forces, whereas the cos-isomer also has dipole-dipole interactions

the dissolution of polymer can be thermodynamically described in 2 steps.

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intermolecular forces are the forces between molecules or particles.

there are two kinds of van der waals forces: weak london dispersion forces and stronger dipole-dipole forces.

in molecule of water there are dipole-dipole forces between negatively charged oxygen from one molecule of water and positively charger hydrogen of another molecule of water.

hydrogen bond is an electrostatic attraction between two polar groups that occurs when a hydrogen atom (h), covalently bound to a highly electronegative atom such as flourine (f), oxygen (o) and nitrogen (n) atoms.