Identification Tests for Anions

Question 1

Cl WHITE PPT

Answer 1

AgNO3

Question 2

Cl PPT DISSOLVES

Answer 2

6M NH4OH

Question 3

Cl PPT REPRECIPITATES

Answer 3

6M HNO3

Question 4

SCN DEEP BLOODY RED SOL

Answer 4

FeCl3

Question 5

DEEP BLOODY RED SOL

Answer 5

SCN- + FeCl3

Question 6

Fe(CN)6-3 TURNBULL’S BLUE (dark green blue)

Answer 6

FeSO4
FERROUS SULFATE

Question 7

Fe(CN)6-3
MUDDY YELLOW

Answer 7

CuSO4
COPER SULFATE

Question 8

(dark green blue)
Turnbull’s blue

Answer 8

Fe(CN)6-3 + FeSO4 (ferrous sulfate)

Question 9

(muddy yellow)

Answer 9

Fe(CN)6-3 + CuSO4 (copper sulfate)

Question 10

IDENTIFICATION TEST FOR BORATE

Answer 10

H2SO4
95% METHANOL

Question 11

BO3-3 Δ + conc. H2SO4 + CH3OH

Answer 11

GREEN FLAME

Question 12

GREEN FLAME

Answer 12

BO3-3 Δ + conc. H2SO4 + CH3OH

Question 13

CO3-2 + conc. H2SO4

Answer 13

EFFERVESCENCE

Question 14

CO3-2 + conc. H2SO4

Answer 14

EFFERVESCENCE

Question 15

ARSENATE IDENT TEST

Answer 15

AMMONIUM MOLYBDATE

Question 16

AsO4-3 + (NH4)2MoO4 (ammonium molybdate)

Answer 16

WHITE PPT

Question 17

WHITE PPT

Answer 17

AsO4-3 + (NH4)2MoO4 (ammonium molybdate)

Question 18

CrO4-2 + Pb(NO3)2 (lead nitrate)

Answer 18

YELLOW PPT

Question 19

YELLOW PPT

Answer 19

CrO4-2 + Pb(NO3)2 (lead nitrate)

Question 20

brown ring conjunction:
NO2- (nitrate) + diluted CH3COOH + FeSO4

Answer 20

POSITIVE

Question 21

brown ring conjunction:
NO2- + conc. H2SO4 + FeSO4

Answer 21

POSITIVE

Question 22

brown ring conjunction:
NO3- + diluted CH3COOH + FeSO4

Answer 22

POSITIVE

Question 23

brown ring conjunction:
NO3- + conc. H2SO4 + FeSO4

Answer 23

NEGATIVE

Question 24

CH3COO- (acetate) + FeCl3

Answer 24

ORANGE SOL

Question 25

ORANGE SOL

Answer 25

CH3COO- (acetate) + FeCl3

Question 26

SO4-2 + Pb(NO3)2

Answer 26

WHITE PPT

Question 27

White ppt (soluble in HNO3)
(dissolves upon heating)

Answer 27

AsO4-3 + (NH4)6 Mo7O24

Question 28

Vinegar-like odor

Answer 28

CH3COO- + Conc. H2SO4