Question

Select which intermolecular forces of attraction are present between ch3ch2nh2 molecules.

Answer 1

The intermolecular forces present between ${\text{C}}{{\text{H}}_3}{\text{C}}{{\text{H}}_2}{\text{N}}{{\text{H}}_2}$ molecules are  

$\boxed{{\text{hydrogen bonding and dispersion forces}}}$

Further Explanation:

Intermolecular forces:

The forces that exist between the molecules are known as intermolecular forces (IMF). IMF includes both attractive as well as repulsive forces. They are electrostatic in nature and determine the bulk properties of the substances like melting and boiling points. Molecules are held in any substance due to these forces.

The various types of intermolecular forces are as follows:

1. Hydrogen bonding:

It is an attractive force that exists between hydrogen and more electronegative elements like N, O, F. It can either be intermolecular or intramolecular. Intermolecular hydrogen bonding is the one that occurs between different molecules. For example, the bond between HF and ${{\text{H}}_{\text{2}}}{\text{O}}$  is an intermolecular hydrogen bond. Intramolecular hydrogen bonding occurs between various parts of the same molecule. Ortho-nitro phenol and salicylaldehyde show this type of bonding.

2. Ion-dipole forces:

It is an attractive force that occurs between an ion and a molecule consisting of a dipole. The force between ${\text{N}}{{\text{a}}^ + }$  and water molecule is an example of this force.

3. Ion-induced dipole forces:

It is an attractive force that occurs between an ion and a nonpolar molecule. It induces a dipole in the molecule, resulting in ion-induced dipole force. The bond between ${\text{F}}{{\text{e}}^{2 + }}$  and oxygen molecule is an example of such kind of bond.

In ${\mathbf{C}}{{\mathbf{H}}_{\mathbf{3}}}{\mathbf{C}}{{\mathbf{H}}_{\mathbf{2}}}{\mathbf{N}}{{\mathbf{H}}_{\mathbf{2}}}$ , there is a presence of amine group $\left({{\text{ - N}}{{\text{H}}_2}}\right)$  having a highly electronegative N atom. So it can form hydrogen bonds with hydrogen atom of solvent molecule like water. Also, a hydrocarbon chain $\left({{\text{ - C}}{{\text{H}}_3}{\text{C}}{{\text{H}}_2}}\right)$  is present in the molecule and we know dispersion forces exist between atoms and molecules. So ${\text{C}}{{\text{H}}_3}{\text{C}}{{\text{H}}_2}{\text{N}}{{\text{H}}_2}$  has both dispersion forces as well as hydrogen bonds between its molecules.

Learn more:

1. Number of covalent bonds formed by nitrogen: brainly.com/question/6029316

2. Which pair will form covalent bond?: brainly.com/question/1126757

Answer details:

Grade: Senior School

Subject: Chemistry

Chapter: Ionic and covalent bonding

Keywords: Intermolecular forces, CH3CHNH2, hydrogen bonding, dispersion forces, -NH2, -CH3CH2, amine, hydrocarbon, atoms, molecules.

Answer 2

The intermolecular forces of attraction between CH3CH2NH2 are dispersion forces and hydrogen bonds. Dispersion forces are due to the ethyl ends of the molecule and the hydrogen bonds are due to the presence of the amine end of the molecule.