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Muskan Ahluwalia
Subject: Chemistry
, asked on 19/12/17
Solve this :
13. A mixture of potassium chlorate, oxalic acid and sulphuric acid is heated. During the reaction which
element undergoes maximum change in the oxidation number?
(a) S (b) H
(c) CI (d) C
(AIPMT Prelims 2012)
Answer
1
Muskan Ahluwalia
Subject: Chemistry
, asked on 19/12/17
Question 4
4
.
O
x
i
d
a
t
i
o
n
s
t
a
t
e
o
f
e
a
c
h
C
l
i
n
C
a
O
C
l
2
i
s
/
a
r
e
(
a
)
0
(
b
)
+
1
(
c
)
-
1
(
d
)
+
1
,
-
1
Answer
1
Muskan Ahluwalia
Subject: Chemistry
, asked on 19/12/17
Q. The oxidation numbers of the sulphur atoms in peroxomono sulphuric acid (H
2
SO
5
)
and peroxodisulphuric acid (H
2
S
2
O
8
) are respectively (a) +8 and +7 (b) +3 and +3 (c) +6 and +6 (d) +4 and +6
Answer
1
Varnika Dhiman
Subject: Chemistry
, asked on 12/12/17
Kindly solve this stepwise. [No links plz. Want this one only.]
Answer
1
Varnika Dhiman
Subject: Chemistry
, asked on 11/12/17
Kindly solve with proper explanations.
[The solution that I saw in the sample paper was not sufficient. So, kindly mention everything which is necessary for this question.]
Answer
1
Yashika Bhanwar
Subject: Chemistry
, asked on 9/12/17
Ans que 14
Q14. For the cell reaction,
Cu
S
+
Cl
2
aq
→
Cu
2
+
aq
+
2
Cl
-
aq
Cell notation is
a
Cu
S
|
Cu
2
+
aq
|
|
Cl
-
aq
|
Cl
2
g
|
C
S
b
C
S
|
Cl
-
aq
|
Cl
2
g
|
|
Cu
2
+
aq
|
Cu
S
c
Cu
S
|
Cu
2
+
aq
|
|
Cl
-
aq
|
Cl
2
g
d
Cu
S
|
Cu
2
+
aq
|
|
Cl
2
aq
Cl
-
aq
Answer
1
Aparna Sahu
Subject: Chemistry
, asked on 7/12/17
Solve this
17. Question
A cylinder contains 640 gm of liquid oxygen. The volume occupied (in litres) by the oxygen, when it is released and brought to standard conditions (0
°
C, 760 mm Hg) will be _ _ _ _ _ _ litres.
Answer
1
Aparna Sahu
Subject: Chemistry
, asked on 6/12/17
12. One mole of nitrogen at 8 bar and 600 K is contained in a piston- cylinder arrangement. It is brought to 1 bar isothermally against a resisting the pressure of 1 bar. The work is done (in Joules) by the gas is
1.30554
2.10373
3.4988.4
4.4364.9
Answer
1
Aparna Sahu
Subject: Chemistry
, asked on 6/12/17
Please solve this qustion....
Question 2 of 20
At 60
°
C, vapour pressure of methanol and water are 84.562 kPa and 19.953 kPa respectively. An aqueous solution of methanol at 60
°
C exerts a pressure of 39.223 kPa ; the liquid phase and vapour phase mole fractions of methanol are 0.1686 and 0.5714 respectively. Activity co-efficient of methanol is
1. 4.238
2. 1.9398
3. 1 .572
4. 3.389
Answer
2
Yashwantha Elumalai
Subject: Chemistry
, asked on 3/12/17
What is corossion battery???
Answer
1
Ram
Subject: Chemistry
, asked on 2/12/17
Origin of electrode potential with respect to dissolution and deposition
Answer
1
Aditi
Subject: Chemistry
, asked on 23/11/17
Two half reactions of an electrochemical cell are given below :
M
n
O
4
-
(
a
q
)
+
8
H
+
(
a
q
)
+
5
e
-
→
M
n
2
n
(
a
q
)
+
4
H
2
O
(
l
)
;
E
∘
=
+
1
.
51
V
S
n
2
+
(
a
q
)
→
S
n
4
+
→
+
2
e
-
;
E
∘
=
-
0
.
51
V
Construct the redox equation from the standard potential of the cell and predict, if the reaction is reactant favoured or product favoured.
Answer
1
Ayesha Jahan
Subject: Chemistry
, asked on 3/11/17
10g fairly concentrated solution of CuSO4 is electrolysed using 0.01F of electricity.calculate::
(a) The weight of resulting solution. (b) Equivalent of acid or alkaline in the solution.
Answer
1
Lalita Rani Singh
Subject: Chemistry
, asked on 31/10/17
Please sir/mam fill this table or tell me how to fill it.
Answer
1
Priyanshu Sharma
Subject: Chemistry
, asked on 30/10/17
Density of an equilibrium mixture of N
2
O
4
and NO
2
at 1 atm at 288 K is 3.62. Density of an equilibrium mixture of N2O4 and NO2 at 1 atm at 348 K is 1.84. Calculate entropy change of the reaction at 348 K.
Answer
1
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What are you looking for?
13. A mixture of potassium chlorate, oxalic acid and sulphuric acid is heated. During the reaction which
element undergoes maximum change in the oxidation number?
(a) S (b) H
(c) CI (d) C
(AIPMT Prelims 2012)
Kindly solve with proper explanations.
[The solution that I saw in the sample paper was not sufficient. So, kindly mention everything which is necessary for this question.]
Q14. For the cell reaction,
Cell notation is
17. Question
A cylinder contains 640 gm of liquid oxygen. The volume occupied (in litres) by the oxygen, when it is released and brought to standard conditions (0C, 760 mm Hg) will be _ _ _ _ _ _ litres.
1.30554
2.10373
3.4988.4
4.4364.9
Question 2 of 20
At 60 C, vapour pressure of methanol and water are 84.562 kPa and 19.953 kPa respectively. An aqueous solution of methanol at 60 C exerts a pressure of 39.223 kPa ; the liquid phase and vapour phase mole fractions of methanol are 0.1686 and 0.5714 respectively. Activity co-efficient of methanol is
1. 4.238
2. 1.9398
3. 1 .572
4. 3.389
Construct the redox equation from the standard potential of the cell and predict, if the reaction is reactant favoured or product favoured.
(a) The weight of resulting solution. (b) Equivalent of acid or alkaline in the solution.