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Diya
Subject: Chemistry
, asked on 29/1/17
If the solubility product Ksp of a sparingly soluble salt MX2 at 25°C is 1.0*10^-11 , the solubility of the salt in mole litre ^-1 at this temperature will be
Answer
1
Anushka .
Subject: Chemistry
, asked on 15/9/17
Q21:
21. At 550 K, the K
c
for the following reaction is 10
4
mol
-1
L.
X
(g)
+Y
(g)
⇌
Z
(g)
At equilibrium, it was observed that
X
=
1
2
Y
=
1
2
Z
What is the value of [Z] ( in mol L
-1
) at equilibrium ?
(a) 2 x 10
-4
(b) 10
-4
(c) 2 x 10
-4
(d) 10
4
Answer
2
Athang Satav
Subject: Chemistry
, asked on 19/12/17
Calculate the ratio of pH of a solution containing 1 mole of CH
3
COONa + 1 mole of HCl per litre and of other solution containing 1 mole CH
3
COONa + 1 mole of acetic acid per litre
(1) 1 : 1 (2) 2 : 1 (3) 1 : 2 (4) 2 : 3
Answer
1
Athang Satav
Subject: Chemistry
, asked on 14/12/17
Pls solve
Q121. Following five solution of KOH were prepare as-
First
→
0.1 moles in 1 L
Second
→
0.2 moles in 2 L
Third
→
0.3 moles in 3 L
Fourth
→
0.4 moles in 4 L
Fifth
→
0.5 moles in 5 L
The pH of resultant solution is :-
(1) 2 (2) 1 (3) 13 (4) 7
Answer
1
Tejal Gugliya
Subject: Chemistry
, asked on 19/3/15
define buffer's action and solution. and explain acidic buffer in brief .....
Answer
1
Anushka .
Subject: Chemistry
, asked on 15/9/17
Q25
25
.
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A
(
s
)
⇌
2
B
(
g
)
+
3
C
(
g
)
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Answer
1
Smit Dama
Subject: Chemistry
, asked on 16/12/17
Solve this:
Q.3. For the reaction,
2
C
O
(
g
)
+
O
2
(
g
)
→
2
C
O
2
(
g
)
;
∆
H
=
-
560
k
J
m
o
l
-
1
In one litre vessel at 500 K the initial pressure is 70 atm and after the reaction it becomes 40 atm at constant volume of one litre. Calculate change in internal energy. All the above gases show significant deviation from ideal behaviour. (1 Latm = 0.1 kJ)
Answer
1
Ratna
Subject: Chemistry
, asked on 16/11/18
Calculate partial pressure of carbon monoxide from the followung CaCo3=? CaO+CO2 kp=8.10raised to -2
Answer
1
Tejal Gugliya
Subject: Chemistry
, asked on 19/3/15
what is common ion effect ?
Answer
1
Pooja Verma
Subject: Chemistry
, asked on 13/11/14
What does
Threshold Energy
mean?
Answer
1
Anushka .
Subject: Chemistry
, asked on 13/10/17
if pure water has pkw = 13.36 at 50?c the ph of pure water will be
Answer
1
Tejal Gugliya
Subject: Chemistry
, asked on 19/3/15
derive relationship between Kc and Kp? and derive expression for Kc.
Answer
1
Anushka .
Subject: Chemistry
, asked on 17/9/17
Solve this:
11. For I
2
(g)
⇌
2I(g), K
C
at 1000 K is 10
-6
. One mole I
2
is added in a one-litre container. Which of the following expressions is correct for the above system at equilibrium ?
1
I
2
+
I
=
1
+
x
2
I
2
=
1
2
I
3
I
2
g
>
>
I
g
4
Both
1
and
3
Answer
1
Shivani
Subject: Chemistry
, asked on 11/3/16
Calculate pH and pOH in 0.015 m HCL solution.
Answer
1
Anushka .
Subject: Chemistry
, asked on 12/9/17
Two moles of gas A
2
are mixed with two moles of gas B
2
in a flask of volume 1 lit. If at equilibrium 0.5 moles of A
2
are obtained. Then find out K
p
for reaction
A
2
(g) + B
2
(g) ⇌ 2AB(g)
(1) 12 (2) 9 (3) 4 (4) 36
Answer
2
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What are you looking for?
21. At 550 K, the Kc for the following reaction is 104 mol-1 L.
X(g) +Y(g) Z(g)
At equilibrium, it was observed that
What is the value of [Z] ( in mol L-1) at equilibrium ?
(a) 2 x 10-4 (b) 10-4 (c) 2 x 10-4 (d) 104
(1) 1 : 1 (2) 2 : 1 (3) 1 : 2 (4) 2 : 3
Q121. Following five solution of KOH were prepare as-
First 0.1 moles in 1 L
Second 0.2 moles in 2 L
Third 0.3 moles in 3 L
Fourth 0.4 moles in 4 L
Fifth 0.5 moles in 5 L
The pH of resultant solution is :-
(1) 2 (2) 1 (3) 13 (4) 7
Q.3. For the reaction,
In one litre vessel at 500 K the initial pressure is 70 atm and after the reaction it becomes 40 atm at constant volume of one litre. Calculate change in internal energy. All the above gases show significant deviation from ideal behaviour. (1 Latm = 0.1 kJ)
What does Threshold Energy mean?
11. For I2(g) 2I(g), KC at 1000 K is 10-6. One mole I2 is added in a one-litre container. Which of the following expressions is correct for the above system at equilibrium ?
A2(g) + B2(g) ⇌ 2AB(g)
(1) 12 (2) 9 (3) 4 (4) 36