Erwin Smith > Salt Analysis > Flashcards

Salt Analysis Flashcards

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1
Q

compounds which react with dil and conc h2so4

A

(co3)²– s²– No2 -

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2
Q

compounds which react with only conc h2so4

A

cl br i no3-

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3
Q

ppt rxn compounds are

A

so4²-

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4
Q

4properties of carbonate on h2so4

A

colourless odourless brisk effervescent like water milky ca(oh)2

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5
Q

3So3²- properties on h2So4

A

colourless suffocating smell lime water milky so2 gas

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6
Q

3 s²- property on h2so4

A

colourless h2s gas rotten egg turns lead acetate to paper black Pbs

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7
Q

2 no2- property on h2so4

A

no2 gas odourless brown gas

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8
Q

Hno2 + KI and addition of starch

A

blue complex

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9
Q

co2 + potassium dichromate

A

no rxn

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10
Q

so2 + potassium dichromate

A

cr+³ green + So4²–

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11
Q

co2 + ca(oh)2 gives and excess CO2

A

caco3 milky white ppt and excess soluble

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12
Q

so2 + ca(oh)2 gives and excess so2

A

CaSo3 milky white and excess so2 soluble

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13
Q

cl- br- i- on conc h2so4

A

hcl Br2 i2

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14
Q

colour of halogen gasses

A

cl colourless pungent br reddish brown i2 violet

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15
Q

no3 minus on conc h2so4

A

no2 gas brown 🤎

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16
Q

on adding ___ intensity of halogen gases increase

A

MnO2

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17
Q

on adding ___ intensity of no2 gas increase

A

cu turning blue sol

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18
Q

name of test and colour ppt sulphanilic acid + 1 napthyl amine

A

Griss illosvay red azo dye

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19
Q

SNP formula

A

Na₂[Fe(CN)₅NO]·2H₂O

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20
Q

Na2S + SNP gives

A

violet Na₄[Fe(CN)₅(NOS)]

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21
Q

No3- + conc or dil h2s04+ feso4 gives

A

Brown ring [Fe(H₂O)₅(NO)]SO₄

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22
Q

oxdn state and hybd. of fe in brown ring

A

+1 sp3d2

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23
Q

brown ring test shown by

A

nitrate only no3-

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24
Q

Hcl gas + nh3 gives

A

nh4cl dense white fumes

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25
nacl + MnO2+ h2so4 gives
cl2 gas greenish yellow
26
order of solubility in nh4oh of silver halides and colour
AgCl (white) > AgBr (pale yellow) > AgI (yellow)
27
Chormyl chloride test is done for
finding cl minus ion
28
Chormyl chloride test not given by
Ag cu hg sn pb aaj kyu hoga sunhara pal
29
potassium dichromate on addition of salt and acid gives
CrO2Cl2 red brown chormyl chloride
30
potassium dichromate on addition of salt and acid and base gives
Na2CrO4 yellow
31
potassium dichromate on addition of salt and acid and base gives a compound which is water soluble or insoluble
water soluble
32
potassium dichromate on addition of salt and acid and base and then peroxide add gives
CrO5 blue
33
potassium dichromate on addition of salt and acid and base and add lead acetate give
PbCrO4 yellow ppt 💛
34
Br - on conc h2so4 and starch
yellow soln
35
nabr + MnO2 h2so4 gives
Br2 gas reddish brown
36
br - and i - cl/h20 drop
Br3- red orange and I3- brown
37
br - and i - cl/h20 drop and organic solvent
brown layer br2 and violet layer i2 layers test
38
layer test cl/h20 excess
yellow sol for bromine and colourless for iodine
39
so4²- + ba2+ gives
Baso4 white ppt
40
so4²- + lead acetate give
Pbso4 white ppt
41
trick for flame test
le kar sarcar rab k saath pagal kyu banana 3 double 1 2 triple 1 ca brick red
42
borax bead test rxn
: Na₂B₄O₇·10H₂O → 2NaBO₂ + B₂O₃ + 10H₂O B₂O₃ + Cuso4 → Cu(BO2)2 (coloured bead)
43
trick for borax bead colour
why red bull cuz good game red bull.. oxidising | reducing
44
flame upar and neeche part
upar part non lum oxidising...neeche part lum reducing
45
cobalt nitrate test colour trick
znabe aali mange gaadi bangla paisa
46
What cations belong to Group I?
Pb²⁺ Hg₂²⁺ Ag⁺
47
What cations belong to Group IIA?
Pb²⁺ Cu²⁺ Hg²⁺ Cd²⁺
48
What cations belong to Group IIB?
As³⁺ Sb³⁺ Sn²⁺
49
What cations belong to Group III?
Al³⁺ Cr³⁺ Fe³⁺
50
What cations belong to Group IV?
Ni²⁺ Co²⁺ Mn²⁺ Zn²⁺
51
What cations belong to Group V?
Ba²⁺ Sr²⁺ Ca²⁺
52
What cations belong to Group VI?
Na⁺ Mg²⁺ K⁺
53
Reagent used for Group I?
Dilute HCl
54
Reagent used for Group IIA?
H₂S in acidic medium
55
Reagent used for Group IIB?
H₂S in acidic medium
56
Reagent used for Group III?
NH₄OH + NH₄Cl
57
Reagent used for Group IV?
H₂S in basic medium
58
Reagent used for Group V?
(NH₄)₂CO₃ + NH₄Cl + NH₄OH
59
Reagent used for Group VI?
No group reagent
60
Group I- VI down the group ksp and solubility inc/dec
Increase
61
Nh4Cl + Naoh
Nh3 gas
62
Nh4+ + K2HgI4 + Koh gives
HgO•HgNh2i brown ppt
63
nessler reagent
K₂[HgI₄] in KOH
64
PbCl2 in Ki gives
Pbi2 yellow
65
Which cations are soluble in excess NaOH / hot water?
Pb²⁺ Al³⁺ Zn²⁺ Be²⁺ Punzabi
66
PbCl2 + K2CrO4 gives?
PbCrO4 yellow ppt 💛
67
PbCl2 + dil H2SO4 gives?
PbSO4 white ppt 🤍
68
Cu²⁺ + KI gives?
CuI white ppt 🤍 + I2
69
Cu²⁺ + dil HNO3 gives?
NO gas
70
CuSO4 + NH4OH gives?
Cu(OH)2 blue ppt 💙
71
Cu(OH)2 + excess NH3 gives?
[Cu(NH3)4]²⁺ deep blue solution 💙
72
CuSO4 + K4[Fe(CN)6] gives?
Cu2[Fe(CN)6] chocolate brown ppt 🤎 🍫
73
Cu²⁺ + H2S gives?
CuS black ppt 🖤
74
who show lake test
Al+3
75
Al³⁺ + NaOH gives?
Al(OH)₃ white ppt 🤍
76
Al(OH)₃ soluble in excess NaOH gives?
Na[Al(OH)₄] soluble
77
Confirmatory test for Al³⁺?
Lake test
78
Lake test result for Al³⁺?
Blue litmus turns red 🔵➡️🔴
79
Fe³⁺ + NaOH gives?
Fe(OH)₃ reddish brown ppt 🤎
80
Fe(OH)₃ + dil HCl gives?
FeCl₃ soluble
81
Fe³⁺ + excess KCN gives?
K₃[Fe(CN)₆] yellow solution 💛
82
FeCl₃ + K₄[Fe(CN)₆] gives?
Fe₄[Fe(CN)₆]₃ Prussian blue ppt 💙
83
Name of Fe₄[Fe(CN)₆]₃?
Prussian Blue 💙
84
Name of Fe₃[Fe(CN)₆]₂?
Turnbull’s Blue 💙
85
Fe³⁺ + SCN⁻ gives?
Fe(SCN)²⁺ / Fe(SCN)₃ blood red colour ❤️
86
SCN⁻ test is used to differentiate?
Fe²⁺ and Fe³⁺
87
ZnS + HCl gives?
ZnCl2 soluble
88
ZnCl2 + NaOH gives?
Zn(OH)2 white ppt 🤍
89
Zn(OH)2 soluble in excess NaOH gives?
Na2[Zn(OH)4] soluble
90
ZnCl2 + K4[Fe(CN)6] gives?
Zn2[Fe(CN)6] blue-white ppt 💙🤍
91
NiS dissolves in which acid?
Aqua regia (HNO3:HCl = 1:3)
92
NiS + aqua regia gives?
NiCl2 soluble
93
Confirmatory test for Ni²⁺?
Dimethyl glyoxime (DMG) test
94
NiCl2 + DMG gives?
Ni(DMG)2 rosy red ppt 🌹❤️
95
Nature of Ni–DMG complex?
Chelation (5-membered ring)
96
Donor atom in DMG?
Nitrogen (N)
97
Coordination number of Ni in Ni-DMG?
4
98
Hybridisation of Ni in Ni-DMG?
dsp2
99
Geometry of Ni-DMG complex?
Square planar
100
Ni (impure) + CO gives?
Ni(CO)4 violet complex 💜
101
Ni(CO)4 on heating gives?
Pure Ni
102
Ba²⁺ + CO3²⁻ gives?
BaCO3 white ppt 🤍
103
BaCO3 + CH3COOH + K2CrO4 gives?
BaCrO4 yellow ppt 💛
104
Ca²⁺ + CO3²⁻ gives?
CaCO3 white ppt 🤍
105
CaCO3 + CH3COOH + (NH4)2C2O4 gives?
CaC2O4 white ppt 🤍
106
Mg²⁺ + NH4OH + Na2HPO4 gives?
Mg(NH4)PO4 white ppt 🤍
107
Mg²⁺ + excess NaOH gives?
Insoluble precipitate
Erwin Smith
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