ANACHEM LAB

Question 1

Members of Group 1 Cations

Answer 1

1 Chloride
2 Bromide
3 Iodide
4 Cyanide
5 Ferrocyanide
6 Ferricyanide
7 Thiocyanate

Question 2

Chlorides, Bromides, and Iodides are mostly in ____________________

Answer 2

Single oxidation State

Question 3

Chlorides, Bromides, and Iodides with hydrogen form __________________

Answer 3

Hydrohalides

Question 4

Chlorides, Bromides, and Iodides form precipitate with ______________ with characteristic colors that could he as a means of identifying them from one another.

Answer 4

Silver Ions

Question 5

Chlorides, Bromides, and Iodides are ________ reducing agents

Answer 5

Good

Question 6

Cl-

Answer 6

Chloride

Question 7

Br-

Answer 7

Bromide

Question 8

I-

Answer 8

Iodide

Question 9

CN-

Answer 9

Cyanide

Question 10

Fe(CN)6 4-

Answer 10

Ferrocyanide

Question 11

Fe(CN)6 3-

Answer 11

Ferricyanide

Question 12

SCN-

Answer 12

Thiocyanate

Question 13

when _________ halides are heated with a few drops of ___________ or conc _______ they form to their corresponding hydrohalide gasses

Answer 13

Alkali, H2SO4, HCl

Question 14

Chloride evolve in to hydrohalide form

Answer 14

HCl gas (WHITE FUMES)

Question 15

Bromide evolve in to hydrohalide form

Answer 15

HBr, Br2, SO2 gases (BROWN ON WARMING, and WHITE FUMES)

Question 16

Iodide evolve in to hydrohalide form

Answer 16

HI, I2, SO2 gases (BROWN ON WARMING VIOLET VAPORS)

Question 17

Color of Precipitate and Solubility in H20, NH4OH, and HNO3 of AgCl

Answer 17

White, insoluble (Water), Soluble (NH4OH), Insoluble (HNO3)

Question 18

Color of Precipitate and Solubility in H20, NH4OH, and HNO3 of AgBr

Answer 18

Cream, Soluble (Water), Slightly soluble (NH4OH), Insoluble HNO3

Question 19

Color of Precipitate and Solubility in H20, NH4OH, and HNO3 of AgI

Answer 19

Light Yellow, slightly soluble (Water), Insoluble (NH4OH & HNO3)

Question 20

An iodine solution added to starch solution will give a characteristic ____________ color

Answer 20

dark blue

Question 21

When an alkali iodide is added to a solution of mercuric chloride ___________________________ will precipitate which is soluble in excess of the iodide salt.

Answer 21

a scarlet mercuric iodide

Question 22

Members of Group II Anions

Answer 22

1. Sulfide
2. Nitrite
3. Acetate

Question 23

S2-

Answer 23

Silfide

Question 24

NO2-

Answer 24

Nitrite

Question 25

CH2COO+

Answer 25

Acetate

Question 26

Development of Hydrogen Sulfide is characterized by _____________________________

Answer 26

Unpleasant Smell

Question 27

__________________________ gas is colorless with an offensive odor ( similar to the odor of a spoiled egg ). It is poisonous and breathing in moderate concentration can be fatal

Answer 27

Hydrogen Sulfide

Question 28

_____________ yields white needle-like crystals of AgNO2, silver nitrate, with the nitrite ions.

Answer 28

Silver nitrate