PICLAB: COMPARATIVE REACTIONS OF ANIONS

Question 1

Not as systematic as those which have been
described for cations.

Answer 1

QUALITATIVE ANALYSIS OF ANIONS

Question 2

Six (6) Major Groups
– Classification based on;
• Precipitation Reactions with AgNO3 and BaCl2
• Solubility of precipitates with excess HNO3

Answer 2

QUALITATIVE ANALYSIS OF ANIONS

Question 3

TUBE 1
Chloride + Silver nitrate

Answer 3

Precipitate formed (P)

Question 4

TUBE 1
Thiocyanate + Silver nitrate

Answer 4

Precipitate formed (P)

Question 5

TUBE 1
Ferricyanide + silver nitrate

Answer 5

Precipitate formed (P)

Question 6

TUBE 1
Chloride +Nitric acid

Answer 6

Insoluble in HNO3 (I)

Question 7

TUBE 1
Thiocyanate + Nitric acid

Answer 7

Insoluble in HNO3 (I)

Question 8

TUBE 1
Ferricyanide + nitric acid

Answer 8

Insoluble in HNO3 (I)

Question 9

TUBE 1
Borate + silver nitrate

Answer 9

Precipitate formed (P)

Question 10

TUBE 1
Carbonate + silver nitrate

Answer 10

Precipitate formed (P)

Question 11

TUBE 1
Arsenate + silver nitrate

Answer 11

Precipitate formed (P)

Question 12

TUBE 1
Chromate + silver nitrate

Answer 12

Precipitate formed (P)

Question 13

TUBE 1
Borate + nitric acid

Answer 13

Soluble in HNO3

Question 14

TUBE
Carbonate + nitric acid

Answer 14

Soluble in HNO3

Question 15

TUBE 1
Arsenate + nitric acid

Answer 15

Soluble in HNO3

Question 16

TUBE 1
Arsenate + nitric acid

Answer 16

Soluble in HNO3

Question 17

TUBE 1
Chromate + nitric acid

Answer 17

Soluble in HNO3

Question 18

TUBE 1
Nitrite + silver nitrate

Answer 18

No precipitate / Precipitate formed

Question 19

TUBE 1
Nitrite + nitric acid

Answer 19

Soluble in HNO3

Question 20

TUBE 1
Nitrate + silver nitrate

Answer 20

No precipitate formed

Question 21

TUBE 1
Nitrate + nitric acid

Answer 21

Soluble in HNO3

Question 22

TUBE 1
Acetate + silver nitrate

Answer 22

No precipitate formed

Question 23

TUBE 1
Acetate + nitric acid

Answer 23

Soluble in HNO3

Question 24

TUBE 1
Sulfate + silver nitrate

Answer 24

No precipitate formed

Question 25

TUBE 1 Sulfate + nitric acid

Answer 25

Soluble in HNO3

Question 26

TUBE 2 Chloride + BaCl2 Thiocyanate + BaCl2 Ferricyanide + BaCl2 Nitrite + BaCl2 Nitrate + BaCl2 Acetate + BaCl2

Answer 26

No precipitate formed

Question 27

TUBE 2 Borate + BaCl2 Carbonate + BaCl2 Arsenate +BaCl2 Chromate + BaCl2 Sulfate + BaCl2

Answer 27

Precipitate formed

Question 28

TUBE 2 Chloride to Sulfate

Answer 28

Soluble in HNO3

Question 29

Group 1 F is the 6th letter in Group 6

Answer 29

HALIDES (except F-) AND CYANIDES

Question 30

GROUP I

Answer 30

CHLORIDES, BROMIDES, IODIDES CYANIDES, FERRICYANIDES, FERROCYANIDES, THIOCYANATES

Question 31

GROUP II “SuNiA”

Answer 31

SULFIDE, NITRITE, ACETATE

Question 32

GROUP III “ Si CarCit Napa BoTox”

Answer 32

SULFITE, CARBONATE, CITRATE, BORATE, TARTRATE, OXALATE

Question 33

GROUP IV “Push Tayo Chairs”

Answer 33

PHOSPHATES, THIOSULFATES, CHROMATES, ARSENITES, ARSENATES

Question 34

GROUP V “NaCa”

Answer 34

NITRATE, CALCIUM

Question 35

GROUP VI “SaF”

Answer 35

SULFATE, FLUORIDE