MIDTERM 01 - Solubility

Question 1

Refers to the ability of a solute to dissolve in a solvent

Answer 1

Solubility

Question 2

3 solubility parameters/profiles (AKT)

Answer 2

Apparent, Kinetic, Thermodynamic

Question 3

Refers to solubility observed under experimental conditions (Types of solubility parameters/profiles)

Answer 3

Apparent solubility

Question 4

Refers to solubility determined by rate of dissolution (Types of solubility parameters/profiles)

Answer 4

Kinetic solubility

Question 5

Refers to solubility when the system is in equilibrium (Types of solubility parameters/profiles)

Answer 5

Thermodynamic solubility

Question 6

Refers to how fast a solute dissolves in a solvent (Factors affecting solubility)

Answer 6

Dissolution rate of solute

Question 7

Generally, a higher temperature results to a higher solubility (Factors affecting solubility)

Answer 7

Temperature

Question 8

Relationship between temperature and solubility in solids

Answer 8

Directly proportional

Question 9

Relationship between temperature and solubility in liquids

Answer 9

Directly proportional

Question 10

Relationship between temperature and solubility in gases

Answer 10

Inversely proportional

Question 11

Involves salting in and salting out (Factors affecting solubility)

Answer 11

Addition of salt

Question 12

Results to an increase in solubility by stabilizing ions in solution

Answer 12

Salting in

Question 13

Results to a decrease in solubility by competing with water molecules

Answer 13

Salting out

Question 14

The formation of a complex with another compound can enhance solubility by stabilizing the solute in the solution (Factors affecting solubility)

Answer 14

Complex formation

Question 15

Converting a solute into its salt form often increases solubility due to better dissociation in water (Factors affecting solubility)

Answer 15

Salt formation

Question 16

Meaning of LUNA

Answer 16

Lipophilic, Unionized, Nonpolar, Absorbed

Question 17

Meaning of HIPE

Answer 17

Hydrophilic, Ionized, Polar, Excreted

Question 18

Amorphous solids have higher solubility than crystalline forms because their disordered structure dissolves more readily in a solvent (Factors affecting solubility)

Answer 18

Amorphous form

Question 19

Very soluble (Parts of solvent used to dissolve 1 part of solute)

Answer 19

<1

Question 20

Freely soluble (Parts of solvent used to dissolve 1 part of solute)

Answer 20

1-10

Question 21

Soluble (Parts of solvent used to dissolve 1 part of solute)

Answer 21

10-30

Question 22

Sparingly soluble (Parts of solvent used to dissolve 1 part of solute)

Answer 22

30-100

Question 23

Slightly soluble (Parts of solvent used to dissolve 1 part of solute)

Answer 23

100-1000

Question 24

Very slightly soluble (Parts of solvent used to dissolve 1 part of solute)

Answer 24

1000-10,000

Question 25

Practically insoluble (Parts of solvent used to dissolve 1 part of solute)

Answer 25

> 10,000

Question 26

Title of experiment 2

Answer 26

Solubility

Question 27

Is an oven designed to precisely heat and dry samples at the same time

Answer 27

Memmert oven

Question 28

Laboratory specification/temperature for Memmert oven

Answer 28

105°C

Question 29

Place __________ of distilled water into a 250 mL Erlenmeyer flask

Answer 29

20 mL

Question 30

Introduce a __________ amount of sample to the water and stir

Answer 30

Corn grain

Question 31

Shake the solution continuously for __________ minutes

Answer 31

15 minutes

Question 32

Pipette two portions of __________ mL of the filtrate into two separate tared evaporating dishes

Answer 32

5 mL

Question 33

Set the Memmert oven at 105°C and heat the solutions for __________ hours

Answer 33

1.5 / 1 1/2 hours