SB 13.2

Will HCl (g) or NaCl (s) be more soluble in the solvent CH3OCH3? Why?

-The dipole-dipole forces in an HCl/CH3OCH3 solution are similar in strength to the dipole-dipole forces between CH3OCH3 molecules. -HCl (g) will be more soluble in CH3OCH3.

What statements correctly describe the change in entropy when a solution is formed? Select all that apply

-The particles in a solution generally have a greater freedom of movement than the particles in a pure solute. -Entropy usually increases when a solution forms because there are more interactions between particles in a solution.

Miscible liquids are liquids that ______.

Are soluble in each other in all proportions

What compounds are expected to be soluble in carbon tetrachloride (CCl4) based on structure?

CO2 C6H6

I2(s) has a very low solubility in H2O(l) because the weak _____ forces between I2 and H2O are not strong enough to replace the _____ between the H2O molecules

Dipole-induced dipole; hydrogen bonds

What statement about entropy is correct?

Entropy measures how dispersed the energy of a system is

Ethanol and water are miscible. What does this mean?

Ethanol and water are soluble in each other in all proportions

The measure of the degree of dispersion of the energy of a system is called

entropy

A solution usually has a _____ entropy than either the pure solvent or pure solute because in the solution there are a _____ number of interactions between particles and therefore _____ ways to distribute the energy of the system.

higher, greater, more

_____ is the process of stabilizing the particles of an ionic solute in aqueous solution by surrounding them with water molecules, which form ion-dipole interactions.

hydration

A solution forms when the attractive _____ between the solute and solvent are similar in _____ to the solvent-solvent and solute-solute attractions and are therefore able to replace them.

intermolecular forces and magnitude/type/strength