Colligative Property

Question 1

The addition of a non-volatile solute to the a solvent lowers the of a non-volatile solute lowers the VP of the liquid vapor pressure of the liquid

Answer 1

Vapor Pressure Lowering

Question 2

Formula of Vapor Pressure Lowering

Answer 2

VP = mole of solvent
——————————-x VP of Solvent
mole of solvent + mole of solute

Question 3

Vapor Pressure Lowering follow what Law

Answer 3

Raoult’s Law

Question 4

A process in which the solvent passes through a semipermeable membrane from area of dilute solution into a concentrated solution.

Answer 4

Osmosis

Question 5

Amount of pressure that must be applied to stop osmosis

Answer 5

Osmotic Pressure

Question 6

Reverse flow of osmosis and solvent moved from solution to the solvent

Answer 6

Reverse Osmosis

Question 7

Reverse Osmosis

Answer 7

For desalination and purification

Question 8

Van’t Hoff Equation

Answer 8

Non-Electrolytes: 𝜋=𝑀𝑅𝑇
Electrolytes: 𝜋=𝜄𝑀𝑅𝑇

Question 9

Equilibrium between the liquid & the gas, point at which the VP equals atmospheric Pressure

Answer 9

Boiling Point

Question 10

A nonvolatile solute + solvent, VP is reduced, elevation of temperature higher than the pure solvent to reach the normal boiling point

Answer 10

Boiling point elevation

Question 11

Formula for BP Elevation

Answer 11

𝛥𝑇𝑏=i𝐾𝑏𝑚
kb = 0.52C/molal

Question 12

Temperature at which the solid and liquid forms of solvent co-exist in equilibrium

Answer 12

Freezing Point Depression

Question 13

Freezing Point Depression formula

Answer 13

𝛥𝑇𝑓=i𝐾𝑓𝑚
kf = 1.86C/molal