Show work please Consider the set of compounds CH_3OCH_3, C_3H_8, LiNO_2, and CH

Question

Show work please Consider the set of compounds CH_3OCH_3, C_3H_8, LiNO_2, and CH_3CH_2OH, with similar molar masses of 46 g/mol, 44 g/mol, 53 g/mol, and 46 g/mol, respectively. For each compound identify the type of its attractive IM forces [i.e., ion-ion, dipole- dipole, H-bonding, dispersion forces, ......). Predict the ranking for these substances in order of increasing melting point. Predict which of these compounds is most likely to be a solid at room temperature and which is most likely to be a gas at room temperature and atmospheric pressure.

Explanation / Answer

a.) CH3OCH3 - Diethyl ether - dipole-dipole, dipole/induced dipole , dispersion forces.

C3H8 - Propane - Dispersion forces.

LINO2 - ion-dipole forces

C2H5OH - Dispersion forces, dipole-dipole and the hydrogen bond.

b. Order of increasing melting point

C3H8, CH3OCH3 , C2H5OH, LiNO2 (highest melting point)

c. Solids: LiNO2

     Gas: C3H8

     Liquid: CH3OCH3 , C2H5OH

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