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Sanskruti
Subject: Chemistry
, asked on 22/7/18
Please help asap
Answer
2
Sanskruti
Subject: Chemistry
, asked on 22/7/18
Help here plz asap
Answer
1
Nitin Pandey
Subject: Chemistry
, asked on 19/7/18
Which has the lowest equivalent conductance
Answer
1
Kingsmen
Subject: Chemistry
, asked on 18/7/18
Please solve this
Answer
1
Kingsmen
Subject: Chemistry
, asked on 16/7/18
Please solve this
Answer
1
Sanskruti
Subject: Chemistry
, asked on 9/7/18
help please asap
Answer
1
Sanskruti
Subject: Chemistry
, asked on 9/7/18
i need help in this one asap
Answer
1
Shubham Gupta
Subject: Chemistry
, asked on 10/5/18
Solve this:
Given standard electrode potentials :
Fe
3
+
+ 3e
-
→
Fe E
0
= -0.036V
Fe
2
+
+ 2e
→
Fe E
0
= -0.44V
The standard electrode potential E
0
of Fe
3
+
+ e
-
→
Fe
2+
is :
(A)-0.476 volt
(B) -0.404 volt
(C) 0.440 volt
(D) 0.772 volt
Answer
1
Shubham Gupta
Subject: Chemistry
, asked on 10/5/18
Solve this:
The standard emf of the following cell:
Cd(s)|CdCl
2
(aq) (0.10 M)||Cl
-
| AgCl(s)|Ag(s)
In which the cell reaction is 2AgCl(s) + Cd(s)
→
2Ag(s) +Cd
2+
+ 2Cl
-
(aq) is 0.6915 V at 10
0
C and 0.6753 V at 25
0
C. The
∆
H of reaction at 25
0
C is
(A) -192.5 kJ (B) -234.7 kJ
(C) 123.5 kJ (D) -167.26 kJ
Answer
1
Essa Amir Hamza Khan
Subject: Chemistry
, asked on 22/3/18
26. What is the action of following on benzene?
a) Methyl chloride in presence of anhydrous
A
l
C
I
3
b) fuming
H
2
S
O
4
Write the electronic structure of benzene.
Answer
1
Essa Amir Hamza Khan
Subject: Chemistry
, asked on 22/3/18
Answer 25:
Q.25 Write a not on -
(a) Resonance
(b) Inductive effect.
Answer
1
Essa Amir Hamza Khan
Subject: Chemistry
, asked on 22/3/18
Balance the redox reaction by using oxidation number method. The reaction occur in acidic medium.
Ag
s
+
NO
3
-
aq
→
Ag
aq
+
+
NO
2
g
Answer
1
Essa Amir Hamza Khan
Subject: Chemistry
, asked on 22/3/18
Answer 19
Answer
1
Essa Amir Hamza Khan
Subject: Chemistry
, asked on 22/3/18
Answer 18
(i) At 300 k a certain mass of a gas occupies 1 x 10
-4
dm
3
volume. calculate its volume at 450 k and at the same pressure.
(ii) Convert 96
o
F to C
o
Answer
1
Essa Amir Hamza Khan
Subject: Chemistry
, asked on 22/3/18
Answer all
Q9. Explain two factors affecting electronegativity.
Q.10 State Octel rule. Explain expanded octet with suitable examples.
(OR)
A
m
m
o
n
i
a
s
h
o
w
s
S
P
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h
y
b
r
i
d
i
s
a
t
i
o
n
,
e
x
p
e
c
t
e
d
S
P
3
b
o
n
d
a
n
g
l
e
i
s
109
°
28
'
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u
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b
o
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a
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107
°
18
'
E
x
p
l
a
i
n
.
Q.11 State flund rule. Write electronic configuration of Fe (Z = 26)
Q.12 Explain Amphoteric nature of water.
Q.13 Distinguish between carbocation and Carbanion.
Q.14 How is acetylene prepared from calcium carbide? Write its any two uses.
Q.15 What happens when (a) boric acid is added to water. (b) borax is heated strongly,
Answer
1
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What are you looking for?
Given standard electrode potentials :
Fe3+ + 3e- Fe E0 = -0.036V
Fe2+ + 2e Fe E0 = -0.44V
The standard electrode potential E0 of Fe3+ + e - Fe2+ is :
(A)-0.476 volt
(B) -0.404 volt
(C) 0.440 volt
(D) 0.772 volt
The standard emf of the following cell:
Cd(s)|CdCl2(aq) (0.10 M)||Cl-| AgCl(s)|Ag(s)
In which the cell reaction is 2AgCl(s) + Cd(s) 2Ag(s) +Cd2+ + 2Cl-(aq) is 0.6915 V at 100 C and 0.6753 V at 250C. The H of reaction at 250C is
(A) -192.5 kJ (B) -234.7 kJ
(C) 123.5 kJ (D) -167.26 kJ
a) Methyl chloride in presence of anhydrous
b) fuming
Write the electronic structure of benzene.
Q.25 Write a not on -
(a) Resonance
(b) Inductive effect.
(i) At 300 k a certain mass of a gas occupies 1 x 10-4 dm3
volume. calculate its volume at 450 k and at the same pressure.
(ii) Convert 96oF to Co
Q9. Explain two factors affecting electronegativity.
Q.10 State Octel rule. Explain expanded octet with suitable examples.
(OR)
Q.11 State flund rule. Write electronic configuration of Fe (Z = 26)
Q.12 Explain Amphoteric nature of water.
Q.13 Distinguish between carbocation and Carbanion.
Q.14 How is acetylene prepared from calcium carbide? Write its any two uses.
Q.15 What happens when (a) boric acid is added to water. (b) borax is heated strongly,