What type of intermolecular interaction predominates in each substance? A. Ammonia (NH3) B. Ethane (C2H6) C. Helium (He) D Potassium Chloride (KCl) how do you know?
how do you know?
ALL substances have dispersion forces (london dispersion forces/ van der waals forces)
polar molecules have a higher force, called the "dipole-dipole" forces
Hydrogen bonds are givne due to the presence of O,N,F with H
ionic molecules have ion-dipole forces, which are the strongest one.
A. Ammonia (NH3)
this is pollar, therefore expect little forces of dispersion forces. There is also hydrogen bonding due to N and H. The main force must be dipole-dipole interactions
B. Ethane (C2H6)
nonpolar, only forces are those of dispersion foces
C. Helium (He)
nonpolar, only forces are those of dispersion foces
Potassium Chloride (KCl)
ionic compound, therefore; ion-dipole, the strongest type of interaction.
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