Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

12 grade stuff > gr 15 > Flashcards

gr 15 Flashcards

1
Q

pale blue solid

A

n2o3

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

only colored gaseous oxide

A

no2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

bond length N—-N in n203

A

186pm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

no2- para or di

A

para

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

angle of N—O—N in no2

A

134

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

no2 is oxidiser or reducer?

A

both

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

no2 dimerisation gives-

A

n2o4

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

no2 dimerises at high or low temp?

A

low temp

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

no2 is used as a ——– in ————

A

oxidiser in rocket fuels

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

light sensitive nitrogen oxide

A

n2o5

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

n2o5 gives which two ions

A

NO2+ NO3-

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

prep of n2o5

A

4HNO3 + P4O10 → 4HPO3 + 2N2O5

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

appearance of n2o5

A

colorless solid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

allotropic forms of

A 
white 
red
black
scarlllet
violet
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

allotropic forms of as, Sb

A

yellow

grey

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

allotropic froms of Bi

A

alpha
beta
gama
delta

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

allotrope of n2 solid-

A

alpha- cubic

beta- hexagonal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

n2 in earth’s crust

A

NaNO3 - chille salt petre

KNO3- indian salt petre

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

p present in minerals of ——- family

A

apatite - Ca9 (po4)6 CaX2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

color and formula of Arsenopyrites

A

FeAsS - white grey

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

color and formula of orpiment

A

As2S3- yellow

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

color and formula of realgar

A

As4S4- orange red

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

color and formula of stibnite

A

Sb2S3 iridescent metal like needle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

color and formula of bismuthinite

A

Bi2S3

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

mp order

A

N< P< As> Sb > Bi

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

highest bp

A

Sb

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

only Bi compound with +5 o.s

A

BiF5 - strong oxidant

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

n2 characters

A 
colorless
odorless
tasteless'
non toxic
diamagnetic
very high bond enthalpy
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

N——N bond length in N2

A

109pm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

bond formed by P As Sb

A

single

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

member w max catenation tendency

A

P

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

ligand of P

A

P(C2H5)3

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

ligand of As

A

As(C6h5)3

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
34
Q

order of stability of hydrides

A

decrease dtg

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
35
Q

hydride that is the strongest R.A

A

BiH3

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
36
Q

order of basicity

A

decrease dtg

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
37
Q

hydroxide characteristics

A

poisonous, foul smelling, colorless gas

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
38
Q

hydroxide smell gradient

A

decrease dtg

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
39
Q

hydroxide poisonous nature gradient

A

increase dtg

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
40
Q

hydride reactivity order

A

decrease dtg

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
41
Q

dtg trend for hydrides

A

becomes diff to prepare
the ease to replace by CL or Me group decreases
ability to act as electron donor decreases
covalent character increases

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
42
Q

prep of hydrides

A

action of water or dil. acid on binary metal compounds

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
43
Q

bp sequence

A

ph3

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
44
Q

mp sequence

A

ph3

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
45
Q 
bond lengths
nh3
ph3
ash3
sbh3
A

.

  1. 7
  2. 9
  3. 9
  4. 7
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
46
Q

thermal stability order of hydrides

A

decrease dtg

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
47
Q

structure of hydrides

A

pyramidal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
48
Q

B.A of nh3

A

107.48’

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
49
Q

B.A of rest hydrides

A

close to 90

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
50
Q

standard enthalpy of form of nh3

A

negative

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
51
Q

standard enthalpy of form of rest of hydrides

A

positive

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
52
Q

oxide acidic character trend

A

decrease dtg

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
53
Q

e2o3 of N and P nature

A

acidic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
54
Q

oxide of As Sb

A

amphoteric

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
55
Q

oxide of Bi

A

basic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
56
Q

does oxides of N and Bi exist as dimers?

A

no

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
57
Q

nature of NO

A

neutral

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
58
Q

acidic strength of oxides of nitrogen

A

n2o

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
59
Q

acidic strength of trioxides

A

n2o3>p4o6>as4o6>sb4o6

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
60
Q

acidic strength of pentaoxides

A

n2o5>p4o10>as4o10>sb4o10

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
61
Q

tetraoxides of As and Sb are ——– oxides

A

mixed

sb2o4= Sb(iii) Sb(v)o4

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
62
Q

are oxides of As and Sb sol in water?

A

no but soluble in alkali

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
63
Q

are oxides of N with +1 and +6 stable?

A

no

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
64
Q

characters of n2o

A

stable,
unreactive
colorless
neutral

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
65
Q

prep of n2o

A

heating of ammonium nitrate at 280. c
Zn+ HNO3
SnCl2+ HNO3+ HCl
NH2OH+HCl+NaNO2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
66
Q

uses of n2o

A

anesthetic
propellant for whipped cream
supporter of combustion
laughing gas

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
67
Q

structure of n2o

A

linear

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
68
Q

why is n2o called sub oxide

A

it has N–O and N—-N bond

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
69
Q

n2o- diamag or paramag

A

diamag

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
70
Q

n2o dipole moment

A

0.16

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
71
Q

NO characters (13)

A 
colorless 
neutral
heavier than air
sparingly soluble in water
not an acid anhydride
intermediate in Ostwald's process
produced during lightning and thunder
endothermic oxide
identified by mixing w air
causes depletion of O3 layer
act as ligand
neurotransmitter in controlling bp 
prevent bacterial decomposition
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
72
Q

NO is para or dia?

A

paramag

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
73
Q

NO is para or dia in liquid state

A

dia due do to dimerisation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
74
Q

NO is estimated by

A

FeSO4

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
75
Q

NO ox or red

A

both haha

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
76
Q

prep of NO

A

Cu+ HNO3 = Cu(NO3)2 + NO + h2O

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
77
Q

prep of pure NO

A

NaNO3+ FeSO4+H2SO4= Fe2(SO4)3+ NaHSO4+h2o+NO

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
78
Q

oxides of phosphorous w cage or dimeric structure

A

p4o6

p4o10

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
79
Q

prep of p4o6

p4o10

A

burning P in limited air

burning P in excess air

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
80
Q

p4o6 is anhydride of

A

phosphorous acid h3po3

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
81
Q

p4o10 is anhydride of

A

phosphoric acid h3po4

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
82
Q

p4o6 on disproportionation gives

A

ph3+ h3po4

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
83
Q

NX3 stability dtg

A

decreases

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
84
Q

NCl3 characteristics

A 
yellow
explosive
endothermic liquid
enthalpy- positive
low B.E
85
Q

characters of NI3

A

mild explosive

shock sensitive

86
Q

can NF3 be hydrolysed

A

no, no d orbitals

87
Q

n2+o2 gives

A

2NO

88
Q

prep of pure n2

A

thermal decomposition of metal azide at 350.C

89
Q

lab prep of n2

A

heating a mixture of NaNO2+NH4Cl (both aq)

90
Q

how to purify n2

A

pass aq acidified K2Cr2O7 to remove impurities like oxides of N and HNO3 vapours

91
Q

other prep of n2

A

(i) chemical volcano
heating of ammonium dichromate >300.C
(ii) passing nh3 to heated CuO

92
Q

uses of n2

A

liq n2- cryosurgery or refrigerant
prep of fertiliers like cyanamide or nitrolim
to provide inert atmosphere
diluent for reacting chemicals

93
Q

nature of hydrazine

A

basic

94
Q

n3h nature

A

hydrazoic acid/ hydrogen azide

95
Q

non combustible hydride of N

A

nh3

96
Q

characters oF nh3

A 
colorless
pungent smelling gas
H bonded is solid and liquid form but NOT in gaseous form
easily liquified to get ammonia
liq nh3 is a good refrigerant
97
Q

prep of nh3

A

decay of urea

98
Q

prep of nh3 in small quantity

A

heating of ammonium salt with alkali

ammonium sulphate

99
Q

N——H in nh3

A

101.7

100
Q
A

107.

101
Q

prep of nh3 in large scale

A

habers process

102
Q

catalyst in habers process

A

Fe2O3

103
Q

who helps to reach eqlbm faster in habers process

A

k2o + al2o3

104
Q

condtions for habers process

A

200 atm

700k

105
Q

prep of nh3 lab:

A

hydrolysis of nitrides

106
Q

nh3 dried by

A

CaO

107
Q

cyanamide process

A

complete hydrolysis of CaCN2

108
Q

pptys of nh3

A

aqs is a weak base
identify cations of G3 AND G4 cations
formation of complexes with transition metal cations

109
Q

what happens when nh3 reacts with HCl

A

white fumes of NH4Cl

110
Q

what happens when nh3 reactes with nesslers reagent

K2HgI4

A

forms iodide of millous base (red)

NH2HgOHgI

111
Q

color when Cr3+ + nh3

A

green

112
Q

NH3+ Al3+

A

gelatinous ppt

113
Q

Fe3+ + NH3

A

brown ppt

114
Q

Zn2+ + nh3

A

dirty white ppt

115
Q

Cu2+ + NH3

A

{cu(nh3)4}2+ - deep blue

116
Q

Ag+ + NH3

A

{Ag(nh3)}+

117
Q

explosive fertilizer of nh3

A

NH4No3

118
Q

formula of nitrous acid

A

HNO2

119
Q

hyponitrous acid

A

H2n2o2

120
Q

who is aqua fortis

A

nitric acid HNO3

121
Q

peroxonitric acid

A

HNO4

122
Q

ppty of nitric acid

A

colorless liquid

planar in vapour phase

123
Q

on standing HNO3 turns

A

yellow due to decomposition

124
Q

lap prep of HNO3

A

retort process

NaNO3 + H2SO4= NaHSO4+HNO3

125
Q

old method in prep of HNO3

A

Birkeland and eyde process

126
Q

manufacture of NH3

A

OSTWALD PROCESS

127
Q

steps of ostwald’s process

A
  1. catalytic reduction of nh3 by air
  2. conversion of NO + NO2
  3. NO2 + H2O= HNO3 + NO
128
Q

product of ostwald’s process

A

68% HNO3

for 98% use conc HNO3
for 100% use p4o10

129
Q

condition for catalytic oxidation of nh3

A

Pt/Rh
500K
9 bar

130
Q

pptys of HNO3

A

aq soln is strongly acidic

used in brown ring test

131
Q

metals + HNO3 gives

A

metal nitrate + NO2= H2O

132
Q

Sn + conc. HNo3 gives

A

metastannic acid H2SnO3

133
Q

Fe, Al, Cr, Co, Ni, Pt + conc. HNO3

A

no rxn haha

134
Q

Mn and Mg + 1-2% HNO3 gives

A

Nitrate+ h2

135
Q

Zn Sn Fe + hot HNO3

A

N2O

136
Q

Zn Sn Fe + cold HNO3

A

nitrate+ NH4NO3 + 3H2O

137
Q

non metals + conc HNo3

A

oxidised product + NO2+ H2O

138
Q

orange colored gas produced in aqua regia

A

NOCl

139
Q

aqua regia reaction

A

HCl + HNO3 = nascent Cl + NOCl + H2O

140
Q

aqua regia dissolves

A

noble mtals like Au Pt, they form complexes

141
Q

uses of nitric acid

A 
fertilizer : NH4NO3
explosives like TNT 
prep of nitroglycerine
oxidiser in rocket propellants
pickling of stainless steel
142
Q

wdym by pickling of stainless steel

A

removing oxides from oxides

143
Q

prep of elemental P4

A

coke reduction/ smelting

heating a mixture of rock phosphate w coke and silica in electric furnace at 1770K

144
Q

formula of rock phosphate

A

Ca3(PO4)2

145
Q

pptys of white/yellow p4

A 
colorless
translucent  waxy solid
most abundant allotrope
most reactive
always kept underwater ( fumes in air)
toxica
dissolves in alkali ( only this guy)
has a garlic smell
burns w pale yellow color
146
Q

disease caused by white p4

A

Phossy jaw

147
Q

structure of white p4

A

tetrahedral

148
Q

pptys of red p

A 
stable
iron grey lustre
insoluble in water and Cs2
more dense than white p
less reactive than white p
149
Q

structure of red p4

A

polymeric

150
Q

prep of red p

A

heat white p to 573k
excess white p removed by alkali
earlier i2 was used as catalyst

151
Q

applications of red p

A

sulphide used in safety matches

p -32 radioactive form - leukamia treatment

152
Q

pptys of black p

A

thermodynamically most stable
metallic form conduct electricity
when heated higher than 1073k == p2 vapour

153
Q

2 types of black p

A

alpha

beta

154
Q

prep of alpha black p

A

heat red p to 803k in sealed tube

155
Q

characters of alpha black p

A 
sublime 
opaque
monoclinic/rhombohedral crystals
doesnt oxidise in air
non conductor
156
Q

prep beta black p

A

heat white p at 473k

157
Q

structure of bb phs

A

layer structure of p4 units

158
Q

best phosphatic fert

A

triple superphosphate Ca(h2po4)2.H2o

159
Q

bone ash

A

phos fert w 50% p

160
Q

thomas slag

A

mixture of Caphosphate + Ca silicate

161
Q

super phosphate of lime

A

prep from rock phosphate+ conc h2so4

162
Q

phosphine pptys

A 
colorlesss
fishy smellm gas
 poisonous
pure ph3 is non inflammable
impure ph3 burns spontaneously
163
Q

prep of triple phosphate

A

mixture of fluroapetite + phosphoric acid

Ca5(po4)3

164
Q

vortex ring in air

A

homles signal: CaC2 + Ca3P2

smoke screen

165
Q

ph3 is absorbed by

A

bleaching powder

166
Q

prep of ph3

A

white p + alkali= ph3 + sod. hypophosphite

sod hypophosphite

167
Q

use of hypophosphate

A

nerve toxic

168
Q

other prep of ph3

A

hydrolysis of phosphide with water/ dil hcl

heating h3po3 and h3po2

169
Q

prep of EXTREME PURE PH3

A

absorbing in HI

170
Q

ph3 ppty

A

slightly sol
aq soln unstable towards light
in presence of hV = red p4 + h2
very low BE

171
Q

halogen/ HNo3 vapours + PH3

A

explosive rxn

172
Q

hydride which a strong red agent

A

ph3

173
Q

ph3 gas can be compltely absorbed by

A

aq CuSO4 & HgCl2= metal phosphide (rat poison)

174
Q

PCl3 pptys

A

colorless oily liquid

sp3

175
Q

prep of PCl3

A

rxn of p4 w limited Cl

rxn of p4 w thionyl chloride

176
Q

reason pcl3 gives fumes in air

A

hydrolysis and product hcl is formed

177
Q

who replace OH group of organic compounds by Cl

A

pcl3

178
Q

pcl5 pptys

A

yellowish white powder

ox agent

179
Q

prep of pcl5

A

p4 + excess cl

white p + sulphuryl chloride

180
Q

hydrolysis

A

fumes { hcl} , H3po4 + POCl3

181
Q

metals + pcl5

A

stable chlorides + pcL3

182
Q

pcl5+p4o10

A

pocl3

183
Q

pcl5 + so2

A

socl2 + pocl3

184
Q

pcl5 + h2so4

A

so2cl2 + pocl3+ hcl

185
Q

pcl5 + d2o

A

pocl3 + dcl

186
Q

gas and solid structure of pcl5

A

sp3d

2 unequal ba and bond lengths

187
Q

solid strructure

A

ionic; exist as ions

{pcl4}+ {pcl6}-

188
Q

pptys common to all oxoacids

A

tetrahedral

no. of ph bond ^ reducing power^

189
Q

hypophosphorous acid

phosphinic

A

h3po2

190
Q

prep of h3po2

A

white p + alkali

191
Q

best oxoacid with highest reducing power

A

h3po2

192
Q

who reduces ag (no3) to ag

also benzene diazonium chloride to benzene

A

yo bad boi h3po2

193
Q

orthophosphorous acid

phosphonic acid

A

h3po3

194
Q

orthophosphoric acid

A

h3po4

195
Q

prep of h3po4

A

p4o10 + H2o

196
Q

which oxoacid of p is the best ox agent

A

h3po4

197
Q

apperance of h3po4

A

colorless syrupy

198
Q

h3po4 on heating 250C gives (a)

a) on heating at 600 C (b

A

(a) pyrophosphoric acid h4p2o7

(b) metaphosphoric acid hpo3

199
Q

uses of h3po4

A

best phosphatic fert

food additive confectionary additives

200
Q

pyrophorous acid

mono or di

A

h4p2o5

di

201
Q

prep of h4p2o5

A

pcl3 + h3po3

202
Q

hypophosphoric acid

mono or di

A

h4p2o6

tetra hoe

203
Q

prep of h4p2o6

A

red p + alkali

204
Q

diphosphoric acid

A

h4p2o7
tetra
i think u already know prep
heating h3po4

205
Q

meta phosphoric acid

A

hpo3

206
Q

polar or non polar

A

polar

207
Q

ppty on hpo3

A 
unstable ; polymeric
glacial phosphoric acid 
coagulate egg white 
cannot act as ox agent
waxy solid
2 polymers
208
Q

which are the 2 polymers of hpo3

A

(hpo3) 3 - cyclic trimer {draw a POP benzene thingy)

(hpo3) n - linear chain

209
Q

prep of hpo3 linear

A

h3po3 + br2 = hpo3 linear { in sealed tube}

12 grade stuff (8 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions