SOLUTIONS

Question 1

What factors make it easier for solutions to bind

Answer 1

Molecules that form the same IMF will interact strongly together (like dissolves like)

Question 2

Process of forming a solution

Answer 2

IMF separate and form new ones (endothermic)

Question 3

Process of mixing new solution

Answer 3

Molecules interact with each other and form new IMF (exothermic)

Question 4

ΔsolnH trends (3)

Answer 4

1. ΔsolnH > 0 endothermic (unfavourable)
2. ΔsolnH = 0 no heat transferred (favored)
3. ΔsolnH < 0 exothermic (favored)

Question 5

ΔsolnH for ionic compound formula

Answer 5

ΔsolnH = ΔhydH - ΔlatticeH

Question 6

Henrys constant

Answer 6

States that solubility of gas and partial pressure is proportional
P ↑, concentration ↑
P ↓, concentration ↓

Question 7

Henrys constant formula

Answer 7

C = kp

Question 8

Molarity formula (M)

Answer 8

moles of solute (mol)/vol solution (L) = mol/L

Question 9

Molality formula (m)

Answer 9

moles of solute (mol)/mass solvent (kg) = mol/kg

Question 10

Mol fraction formula (x)

Answer 10

moles of solute (mol)/moles of solute (mol) + moles solvent (mol) = unitless

Question 11

Mole % formula

Answer 11

mole fraction x100%

Question 12

Volume % formula

Answer 12

volume of solute/volume of solvent x multiplication factor

Question 13

Mass % formula

Answer 13

mass solute/mass solution x multiplication factor

Question 14

Multiplication factors (3)

Answer 14

1. ppm (10^6)
2. ppb (10^9)
3. ppt (10^12)

Question 15

Converting ml to kg

Answer 15

100.0ml x 1.00g/ml x 1kg/1000g

Question 16

Rault’s law

Answer 16

States that the total vapour pressure of a solution is the sum of the vapour pressure of its components

Question 17

Rault’s law formula

Answer 17

Psolution = Xsolvent - Psolvent

Question 18

How to read saturation graph

Answer 18

Curved line of substance is saturated, above the line is supersaturated, below the line is unsaturated