Experiment 7

Question 1

Solubility limit

Answer 1

• The point to which a solute will dissolve
• (s)
• Concentration of the solute (mol/L) or (g/L)
• At which point NO further solid form of the solute will dissolve into the solution

Question 2

After reaching solubility limit…

Answer 2

Solution is SATURATED

Question 3

What does not occur in equilibrium expressions

Answer 3

Pure liquids and solids

Question 4

Solubility products (Ksp)

Answer 4

Equilibrium constants that describe solubility processes

Question 5

Conc Li2C03 LESS than Ksp

Answer 5

More solid lithium carbonate DISSOLVED into solution

Question 6

Conc Li2C03 MORE than Ksp

Answer 6

Solid lithium carbonate will precipitate

Question 7

LeChâtelier’s principle states that an equilibrium will shift to

Answer 7

minimize the amount of an additional reactant or product

Question 8

Common ion effect

Answer 8

A salt will be less soluble in a solution that already contains one of the ions in the salt

Question 9

Goal

Answer 9

Determine solubility of Calcium Hydroxide (Ca(OH)2) by measuring the CONCENTRATION of hydroxide in an aqueous saturated calcium hydroxide solution

Question 10

Indicator used for both?

endpoint?

Answer 10

Methyl orange

Endpoints goes from yellow to a faint pink

Question 11

Titrated with what

Answer 11

HCl for both

Question 12

All anions are considered basic UNLESS…

Answer 12

it comes from one of the 6 strong acids

Question 13

Common ion effect…does what?

Answer 13

DECREASES solubility

Question 14

What if…ADD NaOH

Answer 14

Solubility of Calcium Hydroxide will DECREASE because common ion effect, rxn shifts to cause precipitation

Question 15

Add HCl

Answer 15

INCREASE! decreases pH so increase solubility of soluble base/salt

Question 16

Add NaCl

Answer 16

no effect