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Inorg Lab > Separation of The Basic Constituents Into groups > Flashcards

Separation of The Basic Constituents Into groups Flashcards

1
Q

What is the group no of Silver?

A

I

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2
Q

What is the group name and no. of Ag^+, Pb^+2, Hg2^+2

A

Silver and I

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3
Q

HCl (2-3 M)

A

Silver (Ag^+, Pb^+2, Hg2^+2)

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4
Q

What is the group no of Hydrogen Sulfide?

A

II

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5
Q

Copper subgroup: Cu^2, Cd^+2, Bi^3, Hg^2
Tin Subgroup: Ag^+3, Sb^+3, Sn^+4

A

Hydrogen Sulfide and I

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6
Q

0.3 M H^+ and H2S (10% thioacetamide)

A

Hydrogen Sulfide

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7
Q

What is the group no of Ammonium Sulfide?

A

III

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8
Q

Aluminum subgroup:
Al+3, Cr+3, Zn+2
Nickel subgroup: Fe+2, Fe+3,Mn+2, Ni+2, Co+2

A

III, Ammoniujm Sulfide

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9
Q

6 M NH4OH and H2S
or (NH4)2S (10%thioacetamide)

A

III Ammonium Sulfied

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10
Q

Group name of IV

A

Alkaline earth

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11
Q

Group member of Alkaline Earth

A

Ba+2, Sr+2, Ca+2, Mg+2

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12
Q

12 M NH4OH, 3M (NH4)2CO3 and 95%
EtOH

A

Precipitant of Alkaline earth IV

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13
Q

Group name of V

A

Alkali

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14
Q

Group member of Alkali

A

Na+, K+, Li+, NH4+

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15
Q

Precipitant of Alkali V

A

None

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16
Q

Cations of this group forms precipitates with dilute HCl

A

I-Silver Group

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17
Q

Ag+, Pb+2, Hg+2

A

I-Silver Group

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18
Q

Composed of metals that do not react with HCl.

A

II- Hydrogen Sulfide Group

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19
Q

They form ppt with H2S in dilute mineral acid.

A

II- Hydrogen Sulfide Group

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20
Q

sulfides of this subgroup
are insoluble in Na2S

A

Copper subgroup

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21
Q

sulfides of this subgroup are
soluble in Na2S

A

Tin subgroup

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22
Q

Cu+2, Cd+2, Bi+3, Hg+2

A

Copper Subgroup

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23
Q

Hg+2, As+3, Sb+3, Sn+2 ,Sn+4

A

Tin Subgroup

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24
Q

Copper Subgroup and Tin Subgroup is what group?

A

II-Hydrogen Sulfide Group

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25
Example of II-Hydrogen Sulfide Group is
2Sb+3 + 3H2S → Sb2S3 (orange) + 6H
26
Example of I-Silver Group
Ag+ + Cl- → AgCl (white)
27
These cations do not react either with dilute HCl or with H2S in dilute mineral acid medium.
III- Ammonium Sulfide Group
28
they are precipitated by H2S or (NH4)2S in ammoniacal solution.
III- Ammonium Sulfide Group
29
What is the 2 groups of III- Ammonium Sulfide Group?
Aluminum subgroup and Nickel Subgroup
30
sulfides and hydroxides of this group are soluble in excess NaOH and Na2O2 mixture
Aluminum Subgroup
31
Al+3, Cr+3, Zn+2
Aluminum Subgroup
32
sulfides and hydroxides of this group are insoluble in excess NaOH and Na2O2 mixture
Nickel Subgroup
33
Fe+2, Fe+3, Mn+2, Ni+2, Co+2
Nickel Subgroup
34
Example of III-Ammonium Sulfide Group
Zn+2 + NH4OH → Zn(OH)2 (white)+ NH4+
35
These cations do not react with the precipitating agent of Group I-III.
IV- Alkaline Earth Group
36
they form precipitates with (NH4)2CO3 in the presence of NH4Cl in neutral medium.
IV- Alkaline Earth Group
37
The carbonates of this group are completely precipitated by the addition of 95% EtOH
IV- Alkaline Earth Group
38
What are elements of IV- Alkaline Earth Group
Ba+2, Sr+2, Ca+2, Mg+2
39
Example of IV- Alkaline Earth Group
Ba+2 + (NH4)2CO3 → BaCO3 (white)
40
These cations do not react with the precipitating agents of the previous groups.
V-Alkali Group
41
They are found in the last filtrate after the precipitation of the first four group.
V-Alkali Group
42
What is V-Alkali Group known as?
Soluble group
43
What are elements of V-Alkali Group?
Na+, K+, Li+, NH4+
44
What is the color and nature of PbS
Black Precipitate
45
What is the color and nature of Bi2S3
Dark brown or Brownish black precipitate
46
What is the color and nature of CuS
Black Precipitate
47
what does downward arrow mean?
Solid Precipitate
48
What is the color and nature of CdS
Yellow precipitate
49
What is the solubitility of PbS, Bi2S3, CuS, and CdS in Na2S reagent?
Insoluble
50
What is the color and nature of HgS
White - Yellow - Brown - Black precipitate
51
What is the color and nature of Sb2S3
Orange/ Reddish orage precipitate
52
What is the color and nature of As2S3
Yellow precipitate
53
What is the color and nature SnS
Light Brown precipitate
54
What is the color and nature SnS2
Yellow precipitate
55
What is the solubility (Na2S) of Na2HgS2, NaSbS4, Na3AsS4, Na2SnS3, Na2SnS3?
Colorless solution
56
What is the Fomula of Pb + K2CrO4
PbCrO4
57
what is the nature color and nature of PbCrO4
Yellow Precipitate
58
What is the formula of Pb + NaOH
Na2PbO2 or Pb(OH)4^-2
59
What is the color and nature Na2PbO2 or Pb(OH)4^-2?
Yellow solution
60
What is the Formula of Bi + Na2SnO2
Bi
61
What is the color and nature of Bi
Black Precipitate
62
What is the formula of Cu + K4Fe(CN)6
Cu2Fe(CN)6
63
What is the color and nature of Cu2Fe(CN)6
Amorphous reddish brown precipitate
64
What is the formula of Cu + NH4OH?
Cu(OH)NO3
65
What is the color and nature of Cu(OH)NO3
Green basic salt
66
What is the formula for Cu + excess NH4OH?
Cu(NH3)4 or Cu(NH3)4(OH)2
67
What is the color and nature of Cu(NH3)4 or Cu(NH3)4(OH)2
Blue solution
68
What is the formula of Cd + K4Fe(CN)6
Cd2Fe(CN)6
69
What is the color and nature of Cd2Fe(CN)6
White precipitate
70
What is Formula of Hg + SnCl2
Hg2Cl2 --> Hg^0
71
What is the color and nature of Hg2Cl2 --> Hg^0
White ----gray precipitate
72
What is the formula of Hg + KI
HgI2
73
What is the color and nature of HgI2
Scarlet red precipitate
74
What is the formula of Hg + excess KI?
K2HgI4 or HgI4^-2
75
What is the color and nature of K2HgI4 or HgI4^-2
Solution, Colorless solution
76
What is the formula of Sb + Al metal
Sb^0
77
What is the color and nature of Sb^0
Black precipitate
78
What is the formula of Sb + NaOBr
none
79
What is the color and nature of Sb + NaOBr?
Insoluble
80
What is the formula of As + NaOH, Al metal
AsH3 + Ag^0
81
What is the color and nature of AsH3 + Ag^0
Colorless gas + black precipitate
82
What is the Formula for Sn^+2 + HgCl2
Hg2Cl2 --> Hg^0
83
What is the color and nature of Hg2Cl2 --> Hg^0
Gray precipitate
84
What is the formula of Sn^4 + Hg metal
Sn^+2
85
What is the color and nture of Sn^+2
Colorless solution
86
What is the formula of Sn^+4 + HgCl2
Hg2Cl2 -->Hg^0
87
What is color and nature of Hg2Cl2 -->Hg^0
White-gray precipitate
88

Inorg Lab (11 decks)

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