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Royel Ghost
Subject: Chemistry
, asked on 14/5/18
please solve
QUESTION number 9..
T
h
e
s
o
l
u
b
i
l
i
t
y
P
b
l
2
a
t
25
°
C
i
s
0
.
7
g
L
-
1
.
T
h
e
s
o
l
u
b
i
l
i
t
y
p
r
o
d
u
c
t
o
f
P
b
l
2
a
t
t
h
i
s
t
e
m
p
e
r
a
t
u
r
e
i
s
M
o
l
a
r
m
a
s
s
o
f
P
b
l
2
=
461
.
2
g
m
o
l
-
1
A
.
1
.
40
×
10
-
9
B
.
14
.
0
×
10
-
9
C
.
0
.
14
×
10
-
9
D
.
140
×
10
-
9
Answer
1
Jeneeta Eliza John
Subject: Chemistry
, asked on 2/5/18
Explain qno.60 Ans(2):
60. 'a' moles of PCl
5
are heated in a closed container till equilibrium is established
PCl
5
(g)
⇌
PCl
3
(g) +Cl
2
(g)
at a pressure of P atm. If 'b' moles of PCl
5
dissociate at equilibrium, then
1
a
b
=
K
P
K
P
+
P
2
a
b
=
K
P
+
P
K
P
1
2
3
a
b
=
K
P
K
P
+
P
1
2
4
a
b
=
K
P
P
Answer
1
Haripriya
Subject: Chemistry
, asked on 22/4/18
Please answer this question...:
Q. A buffer solution can be prepared from a mixture of.
a) NH
4
Cl and NaOH in 2:1 mole ratio
b) CH
3
COONa and HCl in 1:1 mole ratio.
c) CH
3
COONa & HCl in 2:1 mole ratio
d) CH
3
COONa and HCl in 1:2 mole ratio.
Answer
1
Royel Ghost
Subject: Chemistry
, asked on 14/4/18
Solve this:
Q. What is the value of Ksp for bismuth sulphate(Bi2S3) which has a solubility of 1.0? 10^-15 mol/litre at 25 C
Answer
2
Hermoine
Subject: Chemistry
, asked on 13/4/18
Please help
When can we neglect the dissociation constant alpha
Do we have to check Ka/c
And for what range it would be
Answer
1
Hermoine
Subject: Chemistry
, asked on 11/4/18
W
h
a
t
i
s
t
h
e
d
i
f
f
e
r
e
n
c
e
b
e
t
w
e
e
n
t
h
e
s
e
t
w
o
f
o
r
m
u
l
a
s
:
(
1
)
H
A
⇌
H
+
+
A
-
C
-
-
C
-
x
x
x
k
A
=
x
2
c
-
x
(
2
)
H
A
⇌
H
+
+
A
-
C
-
-
C
(
1
-
α
)
C
α
C
α
k
A
=
C
α
2
(
1
-
α
)
H
o
w
d
o
w
e
u
n
d
e
r
s
tan
d
w
h
i
c
h
f
o
r
m
u
l
a
t
o
u
s
e
sin
c
e
t
h
e
y
b
o
t
h
g
i
v
e
u
s
d
i
f
f
e
r
e
n
t
a
n
s
w
e
r
s
.
Answer
1
Aishwarya Trivedi
Subject: Chemistry
, asked on 5/4/18
please answer this in detail
Q. A sample of mixture of A(g) , B(g) and C(g) under equilibrium has mean molecular mass equal to 80. The equilibrium is :
A(g)
⇌
B(g) + C(g)
If initially 4 mole of 'A' gas is present then total number of mole at equilibrium is:
[M
A
100, M
B
= 60 M
C
40]
(1) 5 (2) 2 (3) 6 (4) 4
Answer
1
Aaradhya Kondawar
Subject: Chemistry
, asked on 1/4/18
Q.A buffer solution is prepared by mixing 'a' moles of CH3COONa and 'b' moles of CH3COOH such that (a + b) = 1, into water to make 1L buffer solution. If the buffer capacity Of this buffer solution is plotted against moles of salt CH3COONa (with a) then the plot obtained will be (to the scale) approximately.
Answer
1
Geetanjali Bhattacharjee
Subject: Chemistry
, asked on 23/3/18
What is the answer ??
Answer
1
Erw Trjerth
Subject: Chemistry
, asked on 19/3/18
Solve this:
Answer
1
Ruchira Das
Subject: Chemistry
, asked on 18/3/18
the value of the kc for the reaction 2hi gives h2 +i2 is 1*10^-4. at a given time the composition of reaction mixture is [hi] = 2*10^-5 mol , h2 = 1*10^-5mol i2 = 1*10^-5mol in which direction the reaction will proceed??
Answer
1
Vriddhi Kuls
Subject: Chemistry
, asked on 15/3/18
Ques 4
Answer
1
Vriddhi Kuls
Subject: Chemistry
, asked on 15/3/18
Calculate the solubility of PbCl2 if its solubility product is 3.2*10^-8 at 298K
Answer
1
Anisha Mishra
Subject: Chemistry
, asked on 14/3/18
Q.26 don't do the part after 'OR'
Answer
1
Anisha Mishra
Subject: Chemistry
, asked on 14/3/18
Q. On the basis of Le-Chatlier's principle, what would be the effect on Ke for following equilibrium:
P
C
l
5
(
g
)
↔
P
C
l
3
(
g
)
+
C
l
2
(
g
)
∆
H
=
124
k
J
K
c
=
8
.
3
×
10
-
3
If (a) temperature is increased
(b) pressure is increased
(c) Write the expression for equilibrium constant and calculate Kc for reverse reaction.
Answer
1
1
2
3
4
5
Next
What are you looking for?
QUESTION number 9..
60. 'a' moles of PCl5 are heated in a closed container till equilibrium is established
PCl5(g) PCl3(g) +Cl2 (g)
at a pressure of P atm. If 'b' moles of PCl5 dissociate at equilibrium, then
Q. A buffer solution can be prepared from a mixture of.
a) NH4Cl and NaOH in 2:1 mole ratio
b) CH3COONa and HCl in 1:1 mole ratio.
c) CH3COONa & HCl in 2:1 mole ratio
d) CH3COONa and HCl in 1:2 mole ratio.
Q. What is the value of Ksp for bismuth sulphate(Bi2S3) which has a solubility of 1.0? 10^-15 mol/litre at 25 C
When can we neglect the dissociation constant alpha
Do we have to check Ka/c
And for what range it would be
Q. A sample of mixture of A(g) , B(g) and C(g) under equilibrium has mean molecular mass equal to 80. The equilibrium is :
A(g) B(g) + C(g)
If initially 4 mole of 'A' gas is present then total number of mole at equilibrium is:
[MA 100, MB = 60 MC 40]
(1) 5 (2) 2 (3) 6 (4) 4
Q. On the basis of Le-Chatlier's principle, what would be the effect on Ke for following equilibrium:
If (a) temperature is increased
(b) pressure is increased
(c) Write the expression for equilibrium constant and calculate Kc for reverse reaction.