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Tanmai
Subject: Chemistry
, asked on 31/1/15
when 3 mole of a and 1 mole of b are mixed in 1 litre vessel reaction takes place as a+b=2c 1.5 moles of c are formed the equilibrium constant is
Answer
9
Vatsal Bhateria
Subject: Chemistry
, asked on 12/4/18
The equilibrium constant of the reaction A2 +B2 = 2AB at 100 C is 50 . If one litre fladk containing one mole A2 is connectef to a two litre flask containing two moles B2 then how many moles of AB will be formed at 373k ?
Answer
11
Anushka .
Subject: Chemistry
, asked on 15/9/17
34.
P
C
l
5
(
g
)
⇌
P
C
l
3
(
g
)
+
C
l
2
(
g
)
In above reaction at equilibrium condition mole fraction of PCl
5
is 0.4 and mole fraction of Cl
2
is 0.3. Then find out mole fraction of PCl
3
.
1. 0.3 2. 0.7 3. 0.4 4. 0.6
Answer
1
Anushka .
Subject: Chemistry
, asked on 18/9/17
For
N
2
O
3
⇌
NO
+
NO
2
, if total pressure is P atm and amount of dissociation is 50%, the value of K
p
will be
(1) 3 P (2) 2 P (3)
P
3
(4)
P
2
Answer
1
Anushka .
Subject: Chemistry
, asked on 17/9/17
If K
p
for the reaction
N
2
O
4
⇌
2
NO
2
is 0.66 then what is the equilibrium pressure of N
2
O
4
. (Total pressure at equilibrium is 0.5 atm)
(1) 0.168 (2) 0.322 (3) 0.1 (4) 0.5
Answer
1
Anushka .
Subject: Chemistry
, asked on 18/9/17
Solve this:
25.
When heating PCl
5
then it decompose PCl
3
and Cl
2
in form of gas, The vapour density of gas mixture is 70.2 and 57.9 at 200
°
C and 250
°
C. The degree of dissociation of PCl
5
at 200
°
C and 250
°
C is
(1) 48.50% & 80% (2) 60% & 70%
(3) 70% & 80% (4) 80% & 90%
Answer
1
Anushka .
Subject: Chemistry
, asked on 2/11/17
ka for cyano acetic acid is 3.5 ? 10-3. then the degree of hydrolysis of 0.05 M sodium cyano acetate solution will have the following value
answer- 7.559 ? 10-6
Answer
1
Anushka .
Subject: Chemistry
, asked on 15/9/17
36. The dissociation of CO
2
can be expressed as 2CO
2
⇌
2
C
O
+
O
2
. If the 2 mol of CO
2
is taken initially and 40% of the CO
2
is disscoiatated completely. What is the total number of moles at equilibrium:-
1
.
2
.
4
2
.
2
.
0
3
.
1
.
2
4
.
5
Answer
1
Manish Sakalkar
Subject: Chemistry
, asked on 7/2/16
calculate Kc and Kp for the reaction at 295K, N2O4 ------------>2NO2
if the equilibrium concentration are [N2O4]=0.75 and [NO2]=0.062M, R=0.08206L at K-1 mol-1
Answer
1
Anushka .
Subject: Chemistry
, asked on 16/9/17
Q43:
43.
Evaluate K
p
for the reaction : H
2
+ I
2
⇌
2HI, If 2 moles each of H
2
and I
2
are taken initially. The equilibrium moles of HI are 2.
(1) 2.5 (2) 4 (3) 0.25 (4) 1.0
Answer
1
Anushka .
Subject: Chemistry
, asked on 2/11/17
if the molar concentration of pbl2 is 1.5? 10-3 moL-1 then the concentration of iodide ions in g ionL-1 is
Answer
1
Athang Satav
Subject: Chemistry
, asked on 14/12/17
Pls solve
Q). At
90
°
C
, the pH of 0.1 M NaCl aqueous solution is :-
(1) < 7
(2) > 7
(3) 7
(4) 0.1
Answer
2
Athang Satav
Subject: Chemistry
, asked on 8/12/17
The equilibrium constant (K
c
) for the reaction
2
H
C
l
(
g
)
↔
H
2
(
G
)
+
C
l
2
(
g
)
is 4*10
-34
at 25
o
C.
What is the equilibrium constant for the reaction
1
2
H
2
(
g
)
+
1
2
C
l
2
(
g
)
↔
H
C
l
(
g
)
(1) 2*10
-17
(2) 2.5*10
33
(3) 5*10
6
(4) NOT
Answer
2
Anushka .
Subject: Chemistry
, asked on 18/9/17
Solve this:
Q. How many moles per litre of
P
C
l
5
has to be taken to obtain 0.1 mol of
C
l
2
, if the value of equilibrium constant
K
c
is 0.04?
(1) 0.15
(2) 0.25
(3) 0.35
(4) 0.05
Answer
1
Athang Satav
Subject: Chemistry
, asked on 15/12/17
Please solve
Q. 0.05 M ammonium hydroxide solution is dissolved in 0.001 M ammonium chloride solution . What will be the
O
H
-
ion concentration of this solution :
K
b
N
H
4
O
H
=
1
.
8
×
10
-
5
1
3
.
0
×
10
-
3
2
9
.
0
×
10
-
4
3
9
.
0
×
10
-
3
4
3
.
0
×
10
-
4
Answer
1
1
2
3
4
Next
What are you looking for?
In above reaction at equilibrium condition mole fraction of PCl5 is 0.4 and mole fraction of Cl2 is 0.3. Then find out mole fraction of PCl3 .
1. 0.3 2. 0.7 3. 0.4 4. 0.6
(1) 3 P (2) 2 P (3) (4)
(1) 0.168 (2) 0.322 (3) 0.1 (4) 0.5
25. When heating PCl5 then it decompose PCl3 and Cl2 in form of gas, The vapour density of gas mixture is 70.2 and 57.9 at 200 C and 250 C. The degree of dissociation of PCl5 at 200 C and 250 C is
(1) 48.50% & 80% (2) 60% & 70%
(3) 70% & 80% (4) 80% & 90%
answer- 7.559 ? 10-6
5
if the equilibrium concentration are [N2O4]=0.75 and [NO2]=0.062M, R=0.08206L at K-1 mol-1
43. Evaluate Kp for the reaction : H2 + I2 2HI, If 2 moles each of H2 and I2 are taken initially. The equilibrium moles of HI are 2.
(1) 2.5 (2) 4 (3) 0.25 (4) 1.0
Q). At , the pH of 0.1 M NaCl aqueous solution is :-
(1) < 7
(2) > 7
(3) 7
(4) 0.1
What is the equilibrium constant for the reaction
(1) 2*10-17 (2) 2.5*1033 (3) 5*106 (4) NOT
Q. How many moles per litre of has to be taken to obtain 0.1 mol of , if the value of equilibrium constant is 0.04?
(1) 0.15
(2) 0.25
(3) 0.35
(4) 0.05
Q. 0.05 M ammonium hydroxide solution is dissolved in 0.001 M ammonium chloride solution . What will be the ion concentration of this solution :