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Inorganic Chemistry > Salt Analysis > Flashcards

Salt Analysis Flashcards

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1
Q

Classification of anion is done by

A

Wet test

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2
Q

Analysis of cation

A

Dry Test
Flame test
Wet Lest

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3
Q

Cu+2 Ni+2 color

A

Blue Bluish green

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4
Q

Ni +2

A

Greenish

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5
Q

Fe +3

A

Dark Brown

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6
Q

Fe +2

A

Light Green

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7
Q

Mn +2

A

Light Pink
Flesh color
earthy color

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8
Q

Ammonical Smell

A

NH4 +

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9
Q

vinegar Like smell

A

CH3COO -

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10
Q

smell of rotten eggs

A

S 2-

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11
Q

Heavy density salt

A

Pb2+ Ba2+

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12
Q

Light Tuffy powder density

A

Carbonate salts

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13
Q

What is Water Extract

A

It is formed by adding salt in distilled water.

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14
Q

How to make water insoluble salt soluble

A

By adding Na2CO3

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15
Q

What is Soda extract and how is it formed and what is its use

A

Imsoluble salt when mixed with NazC03 and small amant of water to form a paste. After heating it goes into water and then is filtrated. This is Soda Extract and it is used for the of test of dissolved anion

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16
Q

The physical properties of CO2

A

acidic
colorless
Tasteless
Odourless
mon poisonous
non combustible

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17
Q

C02 + NaOH

A

NaHCO3 or Nazc03

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18
Q

CO2 + KOH

A

KHCO3 or K2CO3

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19
Q

CO2 doesn’t react with KMNO4

A

because KMNO4 is already at highest oxidation state

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20
Q

give the reaction of CO2 and calcuin carbonate thingy

A

CO2 + calOH) 2 → CAC03
It is a precipitate and turns water milky
cac03 + H20 → Ca(HCO3)2
In the presence of excess CO2 Milkins disappears.
Due to formation of bicarbonate.

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21
Q

Reaction of co 2 with baryta water.

A

CO2 + Ba (OH) 2 → Bac03
B ACO 3 is a precipitate. And it is milky.
When excess of C02 is past, milkiness disappears

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22
Q

Reaction of co 2 with baryta water.

A

CO2 + Ba (OH) 2 → Bac03
B ACO 3 is a precipitate. And it is milky.
When excess of C02 is past, milkiness disappears

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23
Q

Characteristic properties of SO2

A

colourless suffocating, having taste of burning sulphur.
Reducing agent and a bleaching agent.

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24
Q

How are SO2 and CO2 distinguished

A

Tey are differentiated by reacting the, with KMNO4 K2CR2O7 as CO2 doesn’t react with them

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25
Q

Characteristics of CO

A

Neutral
Colorless odourless tasteless
Combustible and burns with a blue flame
Poisonous in nature

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26
Q

CO forms

A

Carboxyhaemoglobin which is more stable than oxyhaemoglobin

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27
Q

Characteristics properties of 02

A

Odourless, tasteless, it rekindles a glowing splinter.

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28
Q

Characteristic properties of NH3.

A

Basic pungent smell or ammonical smell. It forms white fume of NH3 sale with dry with HCL gas.

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29
Q

Nestlers Test of Ammonia

A

Nh3 or NH4OH + K2HgI2 + KOH → NH2HgOHgI + KI + H20
The major compound is brown in colour
NH3 turns red litmus to blue.

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30
Q

Characteristic properties of H2S.

A

Acidic
Rotten egg smell.
It is Combustible
H2S gives positive nitro prusside test, but only in strong basic medium
It is a weak acid.

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31
Q

F2 gas

A

Pale yellow

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32
Q

Cl2 gas color

A

Green yellow

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33
Q

Br2

A

Reddish brown

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34
Q

I2

A

Violet

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35
Q

What is iodo starch complex?

A

I2 + Starch → deep blue coloration

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36
Q

Things about NO2

A

Brown
acidic
NO 2 → N204
No 2 is Brown and paramagnetic
N204 is colorless and diamagnetic

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37
Q

Compounds present in Group A Radical
(which can be detected)

A

Carbonate (CO3²-)
Bicarbonate (HC03-)
Sulphide (S2-)
Sulphite (S032-)
Nitrite (NO2-)

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38
Q

What is the group reagant of Subgroup IA

A

dilute H2504
Dilute HCI

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39
Q

Group reagant Of subgroup 2A

A

Concentrated H2504
concentrated HCL

40
Q

what is the confirmation test for C032- / HCO3-

A

All the bicarbonates are water soluble
NaH CO3 is sparingly soluble
All the carbonates water insoluble except IA and Ammonia so ppt reaction takesplace

41
Q

Determine the solubility of sulphide S2-

A

All the sulphides are water; insoluble except 1A

42
Q

HF Can’t be stored in which type of container.

A

A HF can be stored in glass bottle. Because it reacts with glass, also known as itching and frosting, so it is stored in plastic container.

43
Q

Discuss the solubility of PbCL2

A

Insoluble in cold water.
Soluble in hot water.
Soluble NCH3 COO NH 4.

44
Q

BaSo4, Srs04, PbS04

A

Insoluble compounds

45
Q

Elements in subgroup IB

A

Guess

46
Q

PBSO4 is soluble in

A

CH3COONa

47
Q

compound in which PBS 04 is Soluble and what does it form after reacting with it

A

After reaction it forms Sugar Of Lead Pb(CH3COO)2Na

48
Q

Ammonium Molybedate Jest produce which color?

A

Canary yellow and also a precipitate

49
Q

the test in which a colorless substance gets coloured and then by adding encess of Chlorine again colour disappears. presence of which compound? and some information

A

It gives the presence of iodide
Chlorine water is added to aqueous solutions KH in the presence of chloroform

50
Q

Brown colour of ring is due to?

A

Nitroso ferrous sulphate

51
Q

. Elements in group V

A

Ba2+, Sr 2+, Ca 2+

52
Q

Ba 2+ can give identification with compounds

A

K2CrO4, (Nh4)2SO4, (NH4)2C2O4

53
Q

Strontium show identification with?

A

Ammonium Sulphate Solution, Ammonium Oxalate Solution

54
Q

Calcium (II) shows identification with?

A

Ammonium Oxalate, K4[Fe(CN)6]

55
Q

Color of group (V) precipitate

A

White and usually they are soluble in mineral acids

56
Q

Things in Group VI

A

Na+ , K+, Mg2+

57
Q

Identification of Magnesium (II)

A

1) Ammonion Solution ( NH4OH)
2) Ammonium Carbonate Solution, but in the absence of NH4
C032- Disodium hydrogen phosphate solution

58
Q

Group VI forms which color PPT?

A

White

59
Q

Group (0)

A

Ammonium (NH4+)

60
Q

How is ammonium Identified?

A

1) On heating with alkali it gives smell of NH3
2) N H 4 CI gas is evolved with white fumes on reaction of NH3+ HCL
3) cuso 4 +4N H3 → [Cu( NH3)4] So 4

61
Q

Information about Nessler’s Reagant

A

→ Brown precipitate or yellow Colouration

62
Q

Ammonium gives yellow precipitate with

A

Na3 [CO(N02) 6]

63
Q

Black sulphide is formed by the action of H2S on

A

Cuperic Chloride

64
Q

A metal nitrate solution with KI solution to give yellow precipitate, which on addition excess of concentrated solution of KiK I dissolve from the solution.

A

Pb2+

65
Q

Which other following is insoluble in dil nitric acid but soluble in aquaregia year?

A

HgS

66
Q

Borax Bead Test

A

.

67
Q

How can Cu 2+ and Ag 2+ be separately identified

A

by reacting with HCl

68
Q

H2S in the presence of H CI precipitates 2 group but not 4th

A

HCL decreases concentration of S2-

69
Q

Soluble in ammonium yellow sulphide

A

As. Sb Sn

70
Q

NH4C1 and NH3 will precipitate

A

Al 3+

71
Q

NH4CI Substitution for identification of Group 3 radicals

A

NH4NO3

72
Q

give points about Borax Bead Test

A

Borax→ Na2B407. 10 H20
Appearance→ white crystalline solid
Used for coloured salts , boran reacts with corresponding metalsalts to form metal borates and show their characteristic
colors.

73
Q

Colour of flame of Na +

A

Golden yellow

74
Q

Violet flame

A

K+

75
Q

Flame color of Li +

A

Carmine Red

76
Q

Brick Red flame

A

Ca 2+

77
Q

Ba 2+ M02+ shows flame

A

Apple Green

78
Q

Normal green flame is given by

A

Cu 2+, (B 03) 3-, Ti3+

79
Q

Strontium gives what crdor flames

A

cumion Red

80
Q

A metal onide that is yellow when hot and white when cold

A

zno

81
Q

CO 2 gas passing through lime water is

A

acid base Ineutralization) reaction

82
Q

shows turbidity with barytawater
turns dichromate green

A

S032-

83
Q

mixture of Solid Na CI and K2 CR207 with cons. H 2504 and its color

A

Chromyl chloride along with orange red vapours.

84
Q

Chramyl Chloride test isn’t given by

A

It is only given by ionic chlorides
Hg2+, Pb2+, Ag+, Sn2+ Sb³+

85
Q

Chramyl Chloride test isn’t given by

A

It is only given by ionic chlorides
Hg2+, Pb2+, Ag+, Sn2+ Sb³+
and the reason is because they show covalent character

86
Q

The Brown kings of the color is due to

A

Nitroso ferrous sulphates

87
Q

Nitrates ofwhich metal are insoluble

A

Mercury and Bismuth

88
Q

precipitate of Pb S04 is soluble in

A

ammonium acetate and forms sugar of lead.

89
Q

on passing H2S through 2nd group The Solutions turn milky why?

A

Oxidising agent

90
Q

what does (NH4)2SO4 do with NH4OH

A

forms another insoluble compounds.

91
Q

A metal is burnt in the air and the ash on moistening givess smell of ammonia

A

Magnesium

92
Q

Sodium sulphide is added to Sodium nitropriusside

A

Purple

93
Q

NO2- ion can be destroyed by

A

1 Sulphamic acid
2) Thiourea
3) urea

94
Q

gives white turbidity bn passing H25

A

S02

95
Q

NO2- and NO3- can be distinguished by

A

dilute H2S04

96
Q

CRC13 + Na 2S

A

Cr(OHJ 3 PPT

Inorganic Chemistry (2 decks)

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