experiment 8

Question 1

defined as the MAXIMUM amount of solute that can be dissolved in a given amount of solvent

Answer 1

Solubility

Question 2

Solubility requirements (2)

Answer 2

specific temperature

specific pressure

Question 3

3 categories of salts

Answer 3

1. Highly Soluble
2. Sparingly Soluble
3. Insoluble

Question 4

Why must the salt solution be saturated when its solubility is determined?

Answer 4

IF:
- UNSATURATED: the maximum number of solute combined wouldn’t be accounted for
- SUPERSATURATED: the amount of solute accounted for will exceed the maximum limit

Question 5

Theoretical Ksp value of Ca(OH)2

Answer 5

5.5 x 10^-6

Question 6

Chemical Equation of Ca(OH)2

and what effects on shift direction and turbidity will the solution have upon addition of the ff:

1. CaCl2
2. NaOH

Answer 6

Ca(OH)2 (s) -> <- Ca2+ (aq) + 2OH- (aq)

1. Backward shift (Le Chatelier’s principle)
2. Backward shift (Le Chatelier’s principle)
3. More turbid because 1 Ca mol / Ca(OH)2
4. Less turbid becase 2 OH- mol / Ca(OH)2 so mas kakailanganin ng more OH- for reaction to take place

Question 7

Does the presence of common ion decrease or increase reaction rate?

Answer 7

Decrease

Question 8

MEANING:

Qsp < Ksp
Qsp > Ksp
Qsp = Ksp

Answer 8

unsaturated
supersaturated
saturated