Chem Lab Final

Question 1

Permanganate in acidic conditions

Answer 1

MnO4 - —–> Mn2+ (clear)

Question 2

Permanganate in neutral conditions

Answer 2

MnO4 - —–> MnO2 (brown ppt)

Question 3

Permanganate in basic conditions

Answer 3

MnO4 - ——> MnO4 2- (green)

Question 4

Oxalate as a reducing agent

Answer 4

CO2 (see gas bubbles)

Question 5

bisulfate (HSO3-) as reducing agent

Answer 5

becomes SO4 2- (sulfate)

Question 6

oxidation numbers of halogens

Answer 6

-1 to +7

Question 7

Strong oxidizing agent

Answer 7

• gains electrons more easily (is itself reduced)
• Usually X2 and turns into X-
• changes color the most

Question 8

Strong reducing agent

Answer 8

• loses electrons more easily (is itself oxidized)
• usually turns from ion (X-) to X2
• most stable in color

Question 9

EDTA CN and ox.no

Answer 9

ox no: -4
CN = 6 (hexadentate)

Question 10

C2O4 CN and ox.no.

Answer 10

ox no: -2
CN = 2 (bidentate)

Question 11

Co 2+

Answer 11

labile

Question 12

Co 3+

Answer 12

inert

Question 13

tetrahedral Co

Answer 13

pink
- stable at high temps

Question 14

octahedral Co

Answer 14

blue
- stable at cold temps

Question 15

transition metal CN

Answer 15

6

Question 16

Reduction of Vanadium

Answer 16

(VO2) + —> (VO)2+. —>. (V)3+ —> V2+

Question 17

Color of (VO2) +

Answer 17

yellow

Question 18

Color of (VO)2+

Answer 18

blue

Question 19

Color of V3+

Answer 19

green

Question 20

color of V2+

Answer 20

violet

Question 21

Naming complex ions (anything in [ ])

Answer 21

name ligands in alphabetical order then the central metal
- if it is an anion overall, name it the weird latin thing

Question 22

Coordination Compounds

Answer 22

name cation and then anion

Question 23

Dichromate

Answer 23

(Cr2O7) 2-

Question 24

Chlorate

Answer 24

(ClO3)-

Question 25

Hydrogen phosphate

Answer 25

HPO4 2-

Question 26

Chlorite

Answer 26

(ClO2) -

Question 27

Cyanide

Answer 27

CN-

Question 28

Nitrate

Answer 28

NO3 -

Question 29

Arsenite

Answer 29

(AsO3) 3-

Question 30

Sulfate

Answer 30

SO4 2-

Question 31

Phosphite

Answer 31

(PO3). 3-

Question 32

bicarbonate

Answer 32

HCO3-

Question 33

Oxalate

Answer 33

(C2O4) 2-

Question 34

Chromate

Answer 34

(CrO4) 2-

Question 35

Perchlorate

Answer 35

ClO4 -

Question 36

Sulfite

Answer 36

(SO3) 2-

Question 37

Hydroxide

Answer 37

OH -

Question 38

Thiocynate

Answer 38

SCN -

Question 39

Permanganate

Answer 39

MnO4 -

Question 40

Carbonate

Answer 40

(CO3) 2-

Question 41

Dihydrogen Phosphate

Answer 41

H2PO4 -

Question 42

Arsenate

Answer 42

(AsO4) 3-

Question 43

Phosphate

Answer 43

PO4 3-

Question 44

Hypochlorite

Answer 44

ClO -

Question 45

Nitrite

Answer 45

NO2 -

Question 46

Accetate

Answer 46

CH3OO -

Question 47

Ammonia

Answer 47

NH3

Question 48

Ammonium

Answer 48

NH4 +

Question 49

Strong Acids

Answer 49

1) HI: hydroiodic acid
2) HCl: hydrochloric acid
3) HBr: hydrobromic acid
4) HSO4: sulferic acid
5) HClO3: chloric acid
6) HClO4: perchloric acid
7) HNO3 : nitric acid

Hi - class - is boring - so - class over - class over - no I should go

Question 50

Strong Bases:

Answer 50

1) LiOH: lithium hydroxide
2) NaOH: sodium hydroxide
3) KOH: potassium hydroxide
4) Ca(OH)2: calcium hydroxide
5) Sr(OH)2: strontium hydroxide
6) Ba(OH)2: barium hydroxide
7) RbOH: rubidium hydroxide
8) CsOH: cesium hydroxide

Like - Nathan - knows - California - is surely - bad -
- Rest in bed - after CS

Question 51

What is a central metal in terms of electron pairs?

Answer 51

electron pair acceptor

Question 52

What are ligands in terms of electron pairs?

Answer 52

electron pair donors