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P Block > Group 15: Pnictogens > Flashcards

Group 15: Pnictogens Flashcards

1
Q

Highest energy in single bond (Group 15)

A

Phosphorous

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2
Q

Highest Melting Point (Group 15)

A

Arsenic

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3
Q

Maximum Catination (Group 15)

A

Phosphorous (White, Red ,Black)

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4
Q

Chile salt petre (Group 15)

A

NaNO3

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5
Q

Indian salt petre (Group 15)

A

KNO3

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6
Q

Minimum oxidation state (Group 15)

A

-3

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7
Q

Maximum oxidation state (Group 15)

A

+5

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8
Q

Disproportional reaction by Nitrogen (in acidic medium) (Group 15)

A

+1 to +4

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9
Q

Preparation of N2 (Group 15)

A
  1. NH4 as cation and anion is oxidizing in nature
  2. azide (heating)
  3. fractional distillation
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10
Q

Most purest Nitrogen is obtained from (Group 15)

A

Azide

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11
Q

Nitride ion (Group 15)

A

N 3−

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12
Q

Azide ion (Group 15)

A

N3 -

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13
Q

N2 + metal (Group 15)

A

Metal nitride

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14
Q

Metal azide (heat) (Group 15)

A

N2

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15
Q

N2 + CaC2 (Group 15)

A

CaNCN + C

Good fertilizer

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16
Q

Calcium Cyanamide (Group 15)

A

CaNCN

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17
Q

Hydrolysis of calcium cyanamide (Group 15)

A

CaCO3 + NH3

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18
Q

Pungent smelling gas (Group 15)

A

NH3

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19
Q

NH3 is soluble in H2O (Group 15)

A

H Bonding

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20
Q

NH3 is soluble in H2O (Group 15)

A

H Bonding

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21
Q

Promoters of Haber’s Process (Group 15)

A

Mo ,K2O ,Al2O3

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22
Q

Function of Promotors (Group 15)

A

Increase the activity of catalyst

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23
Q

Catalyst in Haber’s process (Group 15)

A

Iron oxide

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24
Q

Formation of Metal nitride (Group 15)

A

metal + N2

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25
Q

metal nitride + H20 (Group 15)

A

NH3

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26
Q

Ammonium salt + base (Group 15)

A

NH3

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27
Q

Urea (Group 15)

A

(NH2)CO(NH2)

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28
Q

Hydrolysis of urea (Group 15)

A

(NH4)2CO3

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29
Q

Preparation of NH3 (Group 15)

A
  1. Haber’s process
  2. Nitride salt
  3. Ammonium salt + base
  4. Urea hydrolysis
  5. Reduction of nitrate/ nitrite in basic medium
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30
Q

NH4OH + ZnSO4 (Group 15)

A

Zn(OH)2 (white ppt)

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31
Q

NH4OH + FeCl3 (Group 15)

A

Fe(OH)3 (Brown ppt)

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32
Q

liq.NH3 with alkali and alkaline earth metal(heavier) forms (Group 15)

A

Blue solution and paramagnetic in nature due to solvated electrons (conducting properties)

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33
Q

NH3 complex with Ag (Group 15)

A

[Ag(NH3)2] + (White)

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34
Q

NH3 complex with Cu (Group 15)

A

[Cu(NH3)4] +2 (Blue)

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35
Q

Hyponitrous acid (Group 15)

A

H2N2O2 (+1)

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36
Q

Nitrous acid (Group 15)

A

HNO2 (+3)

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37
Q

Nitric acid (Group 15)

A

HNO3 (+5)

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38
Q

Preparation of Nitric acid (Group 15)

A
  1. Ostwald preparation

2. Nitrate salt(lab preparation) : ion exchange

39
Q

Reagent for ostwald process (Group 15)

A

Rh/ Pt(oxidising)

40
Q

Laughing gas (Group 15)

A

N2O

41
Q

Neutral oxide of nitrogen (Group 15)

A

N2O ,NO

42
Q

Solid oxide of nitrogen (Group 15)

A

N203 ,N2O5

43
Q

Mixed oxide of nitrogen (Group 15)

A

NO2

44
Q

Blue Solid oxide of nitrogen (Group 15)

A

N2O3

45
Q

Reddish brown gas (oxide of nitrogen) (Group 15)

A

NO2

46
Q

Paramagnetic oxide of nitrogen (Group 15)

A

NO2 ,NO

47
Q

NH4NO3 (heat) (Group 15)

A

H2O + N2O

48
Q

Nitrogen sesquioxide (Group 15)

A

N2O3

49
Q

Chemical reactions of HNO3 (Group 15)

A
  1. Acid- Base

2. Oxidising agent

50
Q

Cu + Conc. HNO3 (Group 15)

A

Cu(NO3)2 + NO2 +H2O

51
Q

Cu + Dil. HNO3 (Group 15)

A

Cu(NO3)2 + NO +H2O

52
Q

Zn + Conc. HNO3 (Group 15)

A

Zn(NO3)2 + NO2 +H2O

53
Q

Zn + Dil. HNO3 (Group 15)

A

Zn(NO3)2 + N2O +H2O

54
Q

Xanthoprotic test (Group 15)

A

HNO3 (Xanthoprotein: yellow)

55
Q

Brown ring complex (Group 15)

A

[Fe(H2O)5(NO)]+2

56
Q

Boiling trend of EH3 (Group 15)

A

SbH3 > NH3 > AsH3 > PH3

H Bonding

57
Q

Angle trend of EH3 (Group 15)

A

Dargo’s rule decreases down the grp. (EH3 ~ 90 for E = P, As, Sb, Bi)

58
Q

Acidic nature of oxides (Group 15)

A

decreases

59
Q

general oxides (Group 15)

A

E2O3 < E2O5 (acidic)

60
Q

More covalent general Halide (Group 15)

A

EX5 > EX3

61
Q

Only ionic Halide (Group 15)

A

BiF3

62
Q

White Phosphorous is reactive due to (Group 15)

A

angle strain (60)

63
Q

chemiluminescence (Group 15)

A

P4 (White)

64
Q

Highly polymerized allotrop of P (Group 15)

A

Black

65
Q

insoluble in H2O, Soluble in CS2 (Allotrop of P) (Group 15)

A

P4

66
Q

insoluble in H2O and CS2 (Allotrop of P) (Group 15)

A

Red P

67
Q

smell of rotten fish, highly poisness (Group 15)

A

Phosphine

68
Q

P4 + 2 NaOH + 4 H2O (Group 15)

A

2 PH3 + 2 NaH2PO2

69
Q

Sodium hypophosphite (Group 15)

A

NaH2PO2

70
Q

holme’s signal’s container contains (Group 15)

A

Ca3P2

CaC2

71
Q

Ca3P2, CaC2 on reaction with water forms (Group 15)

A

Ca(OH)2, PH3, C2H2

72
Q

PH3 + O2 = (Group 15)

A

P2O5 + H2O

73
Q

PH3 + METAL SALTS = (Group 15)

A

phosphide ( P 3- )

74
Q

PH3 on contact with oxidizing agent (Group 15)

A

explodes

75
Q

PH3 is soluble in (Group 15)

A

CS2

76
Q

P4 + SOCl2 = (Group 15)

A

PCl3 + SO2 + S2Cl2

77
Q

P4 + SO2Cl2 = (Group 15)

A

PCl5 + SO2

78
Q

ROH + PCl3 = (Group 15)

A

RCl + H3PO3

oxidation state of phosphorus is 3 in both reactant and product

79
Q

ROH + PCl3 = (Group 15)

A

RCl + H3PO3

oxidation state of phosphorus is 3 in both reactant and product

80
Q

PCl5 + SO2 = (Group 15)

A

SOCl2 + POCl3

oxidation state of phosphorus and sulphur is same in both reactant and product

81
Q

PCl5 + H2SO4 = (Group 15)

A

SO2Cl2 + POCl3

oxidation state of phosphorus and sulphur is same in both reactant and product

82
Q

PCl5 + P4O10 = (Group 15)

A

POCl3

oxidation state of P = 5

83
Q

PCl5 + H2O = (Group 15)

A

POCl3 + HCl = H3PO4 + HCl

oxidation state of P = 5

84
Q

acidic nature of H3PO2, H3PO3, H3PO4 (Group 15)

A

H3PO2 > H3PO3 > H3PO4

85
Q

structure of pyrophosphorus acid (Group 15)

A

H4P2O5

86
Q

structure of pyrophosphoric acid (Group 15)

A

H4P2O7

87
Q

structure of polymetaphosphoric acid (Group 15)

A

(HPO3)n

88
Q

structure of cyclometaphosphoric acid (Group 15)

A

(HPO3)3

89
Q

structure of hypophosphoric acid (Group 15)

A

H4P2O6

90
Q

H3PO3 on heating (Group 15)

A

H3PO4 + PH3

91
Q

H3PO2 + AgNO3 + H2O = (Group 15)

A

Ag + H3PO4 + HNO3

92
Q

structure of phosphonic acid (Group 15)

A 
phosphorous acid (H3PO3)
orthophosphorous
93
Q

struxture of orthophosphoric acid (Group 15)

A

phosphoric acid (H3PO4)

94
Q

structure of phosphinic acid (Group 15)

A

hypophosphorous acid (H3PO2)

P Block (4 decks)

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