Module 5

Question 1

Entropy

Answer 1

A measure of the disorder that exists in any system.

Question 2

Molarity (M)

Answer 2

A concentration unit that tells us how many moles of a substance are in a liter of solution. It is determined by taking the number of moles of a substance and dividing by the number of liters of solution.

Question 3

Molality (m)

Answer 3

The number of moles of solute per kilogram of solvent.

Question 4

Mole Fraction

Answer 4

The number of moles of a given component in a mixture divided by the total number of moles in the mixture.

Question 5

When the solute-solvent attraction is greater than the solute-solute attraction and the solvent-solvent attraction,

Answer 5

the solute dissolves exothermically.

Question 6

Ideal Solution

Answer 6

solution formed with no accompanying energy change.

Question 7

When the solute-solvent attraction is lower than the solute-solute and solvent-solvent attraction,

Answer 7

the solute dissolves endothermically.

Question 8

(Delta)S_system +(Delta)S_surroundings >=

Answer 8

0

Question 9

(Delta)G =

Answer 9

(Delta) H - T• (Delta) S

Question 10

Hydrate

Answer 10

A solid compound containing water molecules that are incorporated into the crystal lattice in a specific ratio.

Question 11

(Delta)T =

(freezing point depression)

Answer 11

-i • K_f • m

Question 12

(Delta) T =

(Boiling point elavation)

Answer 12

i • K_b • m