Solutions, Molarity and Intermolecular Forces Video Lessons

Concept: Solutions and Molarity.

# Problem: Predict what will happen when pure dimethyl ether (CH3OCH3) as a solute is mixed with pure methylamine (CH3NH2) as a solventi. the solute will dissolve in the solvent and a solution will formii. a solution will not form and two compounds will form separate layers.because of the following reasoning.iii. both solute and solvent only have London dispersion forces so these will be the strongest intermolecular forces in solution.iv. Since both solute and solvent do not form hydrogen bonds, dipole dipole interaction will be the strongest intermolecular forces promoting solution formation.v. both solute and solvent from hydrogen bonds so they will also form hydrogen bonds in solution.vi. Since, only the solvent from hydrogen bonds, there will be no hydrogen bonds formed in solution and dipole dipole interaction will be the strongest intermolecular force promoting solution formation.vii. Even though only the solvent forms hydrogen bonds there will still be hydrogen bonds formed in solution between the solute and the solvent.A. ii and iiiB. i and ivC. i and vD. i and viE. i and vii

###### Problem Details

Predict what will happen when pure dimethyl ether (CH3OCH3) as a solute is mixed with pure methylamine (CH3NH2) as a solvent
i. the solute will dissolve in the solvent and a solution will form
ii. a solution will not form and two compounds will form separate layers.

because of the following reasoning.
iii. both solute and solvent only have London dispersion forces so these will be the strongest intermolecular forces in solution.
iv. Since both solute and solvent do not form hydrogen bonds, dipole dipole interaction will be the strongest intermolecular forces promoting solution formation.
v. both solute and solvent from hydrogen bonds so they will also form hydrogen bonds in solution.
vi. Since, only the solvent from hydrogen bonds, there will be no hydrogen bonds formed in solution and dipole dipole interaction will be the strongest intermolecular force promoting solution formation.
vii. Even though only the solvent forms hydrogen bonds there will still be hydrogen bonds formed in solution between the solute and the solvent.

A. ii and iii

B. i and iv

C. i and v

D. i and vi

E. i and vii