Group 15: Pnictogens Flashcards
1
Q
Highest energy in single bond (Group 15)
A
Phosphorous
2
Q
Highest Melting Point (Group 15)
A
Arsenic
3
Q
Maximum Catination (Group 15)
A
Phosphorous (White, Red ,Black)
4
Q
Chile salt petre (Group 15)
A
NaNO3
5
Q
Indian salt petre (Group 15)
A
KNO3
6
Q
Minimum oxidation state (Group 15)
A
-3
7
Q
Maximum oxidation state (Group 15)
A
+5
8
Q
Disproportional reaction by Nitrogen (in acidic medium) (Group 15)
A
+1 to +4
9
Q
Preparation of N2 (Group 15)
A
- NH4 as cation and anion is oxidizing in nature
- azide (heating)
- fractional distillation
10
Q
Most purest Nitrogen is obtained from (Group 15)
A
Azide
11
Q
Nitride ion (Group 15)
A
N 3−
12
Q
Azide ion (Group 15)
A
N3 -
13
Q
N2 + metal (Group 15)
A
Metal nitride
14
Q
Metal azide (heat) (Group 15)
A
N2
15
Q
N2 + CaC2 (Group 15)
A
CaNCN + C
Good fertilizer
16
Q
Calcium Cyanamide (Group 15)
A
CaNCN
17
Q
Hydrolysis of calcium cyanamide (Group 15)
A
CaCO3 + NH3
18
Q
Pungent smelling gas (Group 15)
A
NH3
19
Q
NH3 is soluble in H2O (Group 15)
A
H Bonding
20
Q
NH3 is soluble in H2O (Group 15)
A
H Bonding
21
Q
Promoters of Haber’s Process (Group 15)
A
Mo ,K2O ,Al2O3
22
Q
Function of Promotors (Group 15)
A
Increase the activity of catalyst
23
Q
Catalyst in Haber’s process (Group 15)
A
Iron oxide
24
Q
Formation of Metal nitride (Group 15)
A
metal + N2
25
metal nitride + H20 (Group 15)
NH3
26
Ammonium salt + base (Group 15)
NH3
27
Urea (Group 15)
(NH2)CO(NH2)
28
Hydrolysis of urea (Group 15)
(NH4)2CO3
29
Preparation of NH3 (Group 15)
1. Haber's process
2. Nitride salt
3. Ammonium salt + base
4. Urea hydrolysis
5. Reduction of nitrate/ nitrite in basic medium
30
NH4OH + ZnSO4 (Group 15)
Zn(OH)2 (white ppt)
31
NH4OH + FeCl3 (Group 15)
Fe(OH)3 (Brown ppt)
32
liq.NH3 with alkali and alkaline earth metal(heavier) forms (Group 15)
Blue solution and paramagnetic in nature due to solvated electrons (conducting properties)
33
NH3 complex with Ag (Group 15)
[Ag(NH3)2] + (White)
34
NH3 complex with Cu (Group 15)
[Cu(NH3)4] +2 (Blue)
35
Hyponitrous acid (Group 15)
H2N2O2 (+1)
36
Nitrous acid (Group 15)
HNO2 (+3)
37
Nitric acid (Group 15)
HNO3 (+5)
38
Preparation of Nitric acid (Group 15)
1. Ostwald preparation
| 2. Nitrate salt(lab preparation) : ion exchange
39
Reagent for ostwald process (Group 15)
Rh/ Pt(oxidising)
40
Laughing gas (Group 15)
N2O
41
Neutral oxide of nitrogen (Group 15)
N2O ,NO
42
Solid oxide of nitrogen (Group 15)
N203 ,N2O5
43
Mixed oxide of nitrogen (Group 15)
NO2
44
Blue Solid oxide of nitrogen (Group 15)
N2O3
45
Reddish brown gas (oxide of nitrogen) (Group 15)
NO2
46
Paramagnetic oxide of nitrogen (Group 15)
NO2 ,NO
47
NH4NO3 (heat) (Group 15)
H2O + N2O
48
Nitrogen sesquioxide (Group 15)
N2O3
49
Chemical reactions of HNO3 (Group 15)
1. Acid- Base
| 2. Oxidising agent
50
Cu + Conc. HNO3 (Group 15)
Cu(NO3)2 + NO2 +H2O
51
Cu + Dil. HNO3 (Group 15)
Cu(NO3)2 + NO +H2O
52
Zn + Conc. HNO3 (Group 15)
Zn(NO3)2 + NO2 +H2O
53
Zn + Dil. HNO3 (Group 15)
Zn(NO3)2 + N2O +H2O
54
Xanthoprotic test (Group 15)
HNO3 (Xanthoprotein: yellow)
55
Brown ring complex (Group 15)
[Fe(H2O)5(NO)]+2
56
Boiling trend of EH3 (Group 15)
SbH3 > NH3 > AsH3 > PH3
| H Bonding
57
Angle trend of EH3 (Group 15)
Dargo's rule decreases down the grp. (EH3 ~ 90 for E = P, As, Sb, Bi)
58
Acidic nature of oxides (Group 15)
decreases
59
general oxides (Group 15)
E2O3 < E2O5 (acidic)
60
More covalent general Halide (Group 15)
EX5 > EX3
61
Only ionic Halide (Group 15)
BiF3
62
White Phosphorous is reactive due to (Group 15)
angle strain (60)
63
chemiluminescence (Group 15)
P4 (White)
64
Highly polymerized allotrop of P (Group 15)
Black
65
insoluble in H2O, Soluble in CS2 (Allotrop of P) (Group 15)
P4
66
insoluble in H2O and CS2 (Allotrop of P) (Group 15)
Red P
67
smell of rotten fish, highly poisness (Group 15)
Phosphine
68
P4 + 2 NaOH + 4 H2O (Group 15)
2 PH3 + 2 NaH2PO2
69
Sodium hypophosphite (Group 15)
NaH2PO2
70
holme's signal's container contains (Group 15)
Ca3P2
| CaC2
71
Ca3P2, CaC2 on reaction with water forms (Group 15)
Ca(OH)2, PH3, C2H2
72
PH3 + O2 = (Group 15)
P2O5 + H2O
73
PH3 + METAL SALTS = (Group 15)
phosphide ( P 3- )
74
PH3 on contact with oxidizing agent (Group 15)
explodes
75
PH3 is soluble in (Group 15)
CS2
76
P4 + SOCl2 = (Group 15)
PCl3 + SO2 + S2Cl2
77
P4 + SO2Cl2 = (Group 15)
PCl5 + SO2
78
ROH + PCl3 = (Group 15)
RCl + H3PO3
| oxidation state of phosphorus is 3 in both reactant and product
79
ROH + PCl3 = (Group 15)
RCl + H3PO3
| oxidation state of phosphorus is 3 in both reactant and product
80
PCl5 + SO2 = (Group 15)
SOCl2 + POCl3
| oxidation state of phosphorus and sulphur is same in both reactant and product
81
PCl5 + H2SO4 = (Group 15)
SO2Cl2 + POCl3
| oxidation state of phosphorus and sulphur is same in both reactant and product
82
PCl5 + P4O10 = (Group 15)
POCl3
| oxidation state of P = 5
83
PCl5 + H2O = (Group 15)
POCl3 + HCl = H3PO4 + HCl
| oxidation state of P = 5
84
acidic nature of H3PO2, H3PO3, H3PO4 (Group 15)
H3PO2 > H3PO3 > H3PO4
85
structure of pyrophosphorus acid (Group 15)
H4P2O5
86
structure of pyrophosphoric acid (Group 15)
H4P2O7
87
structure of polymetaphosphoric acid (Group 15)
(HPO3)n
88
structure of cyclometaphosphoric acid (Group 15)
(HPO3)3
89
structure of hypophosphoric acid (Group 15)
H4P2O6
90
H3PO3 on heating (Group 15)
H3PO4 + PH3
91
H3PO2 + AgNO3 + H2O = (Group 15)
Ag + H3PO4 + HNO3
92
structure of phosphonic acid (Group 15)
```
phosphorous acid (H3PO3)
orthophosphorous
```
93
struxture of orthophosphoric acid (Group 15)
phosphoric acid (H3PO4)
94
structure of phosphinic acid (Group 15)
hypophosphorous acid (H3PO2)
