Lecture 8: Types of aqueous reactions/ net ionic reactions

Question 1

What is gravimetric analysis?

Answer 1

quantitive information about how much of a specific constituent in a sample is determined by mass

Question 2

What are the steps of gravimetric analysis?

Answer 2

1. sample massed
2. dissolved
3. substance that reacts to form precipitate with constituent added
4. precipitate calculated
5. wash,dry, take mass

Question 3

What is volumetric analysis?

Answer 3

quantitive analysis of acid base chemistry

Question 4

What is a titration?

Answer 4

careful reaction with unknown volume of substance with known concentration

Question 5

What is the titrant?

Answer 5

the known substance

Question 6

What is the analyte?

Answer 6

the unknown substance

Question 7

What is the equivalence point?

Answer 7

enough titrant added to react exactly with the analyte

Question 8

What is the end point?

Answer 8

same number of moles of acid with base

Question 9

What is a solution?

Answer 9

homogeneous mixture (one phase)

Question 10

What is a solvent?

Answer 10

species that retains physical state species in greatest quantity

Question 11

What is the solute?

Answer 11

the species dissolved in solvent

Question 12

What is molarity (M)?

Answer 12

moles of solute per volume of solution in liters

Question 13

What is the equation for molarity?

Answer 13

moles of solute/ liters of solution

Question 14

What is solubility?

Answer 14

amount of solute present in dissolved state (g/L)

Question 15

What does solubility depend on?

Answer 15

1. nature of the solute and solvent (polarity)
2. temperature
3. pressure

Question 16

_____ dissolves in _______

Answer 16

like, like

Question 17

What is Henry’s law?

Answer 17

for solutions of gases in liquids, the solubility of a gas is directly proportional to the partial pressure of the gas above the solution

Question 18

What do the constants in C=Kp stand for?

Answer 18

C= concentration
K= constant for specific solution
P=partial pressure

Question 19

What is a saturated solution?

Answer 19

dissolved solvent is in equilibrium with undissolved solute

Question 20

What is an unsaturated solution?

Answer 20

less dissolved solute than the equilibrium amount

Question 21

What is a supersaturated solution?

Answer 21

more than equilibrium amount

Question 22

What is a hydrated ion?

Answer 22

ion surrounded by water molecules

Question 23

What is a solvated ion?

Answer 23

ion surrounded by solvent molecules

Question 24

What is the rate of the reaction dependent on?

Answer 24

1. nature of solute and solvent (strength of intermolecular bonds)
2. temperature
3. surface area
4. stirring/ agitation