My Cart
Your Cart 0

    Your cart is empty.

  • Total (Amount) ₹0.00
Previous year question hub

Chemical Equilibrium - Physical Chemistry - Chemistry Previous Year Questions

Practice Chemical Equilibrium - Physical Chemistry - Chemistry previous year questions organised from real papers, with year-wise coverage and clear topic navigation.

102Papers
22Years
122Questions
1Topics

Chemical Equilibrium question pattern

Every graph below is calculated only from this selection.

Questions by year

Year-wise coverage for Chemical Equilibrium. Each bar uses a separate theme-derived color.

Difficulty distribution

How the classified questions are distributed by difficulty.

Medium 63 51.6%
Easy 59 48.4%

Question type distribution

MCQ, numerical, multiple-select and other formats found in these papers.

Multiple Choices 71 58.2%
Numerical Answer Type (NAT) 51 41.8%

Subject weightage

Top subjects by unique question coverage.

Chemistry
122 Qs

Most asked topics

Top topics across the included previous year papers.

Physical Chemistry
122 Qs

Subtopic coverage

Top subtopics inside this exact selection.

Chemical Equilibrium
122 Qs

Paper coverage

Question coverage for the most populated papers. Every active PYP paper remains listed below.

JEE Main 2026 (Online) 8th April Evening Shift
2 Qs
JEE MAIN 2026 ONLINE 23RD JANUARY MORNING SHIFT
2 Qs
JEE Main 2026 (Online) 4th April Evening Shift
1 Qs
JEE Main 2026 (Online) 4th April Morning Shift
1 Qs
JEE Main 2026 (Online) 5th April Evening Shift
1 Qs
JEE Main 2026 (Online) 5th April Morning Shift
1 Qs
JEE Main 2026 (Online) 6th April Evening Shift
1 Qs
JEE Main 2026 (Online) 6th April Morning Shift
1 Qs
JEE MAIN 2026 ONLINE 22ND JANUARY MORNING SHIFT
1 Qs
JEE MAIN 2026 ONLINE 23RD JANUARY EVENING SHIFT
1 Qs
JEE MAIN 2026 ONLINE 24TH JANUARY EVENING SHIFT
1 Qs
JEE MAIN 2026 ONLINE 28TH JANUARY EVENING SHIFT
1 Qs
JEE MAIN 2025 ONLINE 3RD APRIL MORNING SHIFT
2 Qs
JEE MAIN 2025 ONLINE 22ND JANUARY MORNING SHIFT
1 Qs
JEE MAIN 2025 ONLINE 23RD JANUARY EVENING SHIFT
1 Qs
JEE MAIN 2025 ONLINE 24TH JANUARY EVENING SHIFT
1 Qs
JEE MAIN 2025 ONLINE 24TH JANUARY MORNING SHIFT
1 Qs
JEE MAIN 2025 ONLINE 29TH JANUARY EVENING SHIFT
1 Qs
JEE MAIN 2025 ONLINE 29TH JANUARY MORNING SHIFT
1 Qs
JEE MAIN 2025 ONLINE 2ND APRIL EVENING SHIFT
1 Qs
JEE MAIN 2025 ONLINE 2ND APRIL MORNING SHIFT
1 Qs
JEE MAIN 2025 ONLINE 8TH APRIL EVENING SHIFT
1 Qs
JEE MAIN 2024 ONLINE 29TH JANUARY EVENING SHIFT
1 Qs
JEE MAIN 2024 ONLINE 29TH JANUARY MORNING SHIFT
1 Qs
JEE MAIN 2024 ONLINE 31ST JANUARY EVENING SHIFT
1 Qs
JEE MAIN 2024 ONLINE 31ST JANUARY MORNING SHIFT
1 Qs
JEE MAIN 2024 ONLINE 4TH APRIL EVENING SHIFT
1 Qs
JEE MAIN 2024 ONLINE 5TH APRIL EVENING SHIFT
1 Qs
JEE MAIN 2024 ONLINE 5TH APRIL MORNING SHIFT
1 Qs
JEE MAIN 2024 ONLINE 6TH APRIL EVENING SHIFT
1 Qs
JEE MAIN 2024 ONLINE 6TH APRIL MORNING SHIFT
1 Qs
JEE MAIN 2024 ONLINE 8TH APRIL MORNING SHIFT
1 Qs
JEE MAIN 2023 ONLINE 29TH JANUARY MORNING SHIFT
2 Qs
JEE MAIN 2023 ONLINE 10TH APRIL EVENING SHIFT
1 Qs
JEE MAIN 2023 ONLINE 10TH APRIL MORNING SHIFT
1 Qs
JEE MAIN 2023 ONLINE 11TH APRIL EVENING SHIFT
1 Qs
JEE MAIN 2023 ONLINE 11TH APRIL MORNING SHIFT
1 Qs
JEE MAIN 2023 ONLINE 1ST FEBRUARY EVENING SHIFT
1 Qs
JEE MAIN 2023 ONLINE 1ST FEBRUARY MORNING SHIFT
1 Qs
JEE MAIN 2023 ONLINE 29TH JANUARY EVENING SHIFT
1 Qs
JEE MAIN 2023 ONLINE 30TH JANUARY EVENING SHIFT
1 Qs
JEE MAIN 2023 ONLINE 31ST JANUARY MORNING SHIFT
1 Qs
JEE MAIN 2023 ONLINE 6TH APRIL EVENING SHIFT
1 Qs
JEE MAIN 2023 ONLINE 6TH APRIL MORNING SHIFT
1 Qs
JEE MAIN 2022 ONLINE 24TH JUNE MORNING SHIFT
2 Qs
JEE MAIN 2022 ONLINE 29TH JUNE EVENING SHIFT
2 Qs
JEE MAIN 2022 ONLINE 24TH JUNE EVENING SHIFT
1 Qs
JEE MAIN 2022 ONLINE 25TH JUNE MORNING SHIFT
1 Qs
JEE MAIN 2022 ONLINE 26TH JULY MORNING SHIFT
1 Qs
JEE MAIN 2022 ONLINE 26TH JUNE EVENING SHIFT
1 Qs
JEE MAIN 2022 ONLINE 27TH JUNE MORNING SHIFT
1 Qs
JEE MAIN 2022 ONLINE 28TH JULY EVENING SHIFT
1 Qs
JEE MAIN 2022 ONLINE 30TH JUNE MORNING SHIFT
1 Qs
JEE Main 2021 (Online) 24th February Morning Shift
3 Qs
JEE MAIN 2021 ONLINE 26TH AUGUST EVENING SHIFT
2 Qs
JEE Main 2021 (Online) 26th February Morning Shift
1 Qs
JEE MAIN 2021 ONLINE 16TH MARCH MORNING SHIFT
1 Qs
JEE MAIN 2021 ONLINE 17TH MARCH EVENING SHIFT
1 Qs
JEE MAIN 2021 ONLINE 17TH MARCH MORNING SHIFT
1 Qs
JEE MAIN 2021 ONLINE 18TH MARCH EVENING SHIFT
1 Qs
JEE MAIN 2021 ONLINE 20TH JULY MORNING SHIFT
1 Qs
JEE MAIN 2021 ONLINE 22TH JULY EVENING SHIFT
1 Qs
JEE MAIN 2021 ONLINE 25TH JULY EVENING SHIFT
1 Qs
JEE MAIN 2021 ONLINE 25TH JULY MORNING SHIFT
1 Qs
JEE MAIN 2021 ONLINE 26TH AUGUST MORNING SHIFT
1 Qs
JEE MAIN 2021 ONLINE 27TH AUGUST EVENING SHIFT
1 Qs
JEE MAIN 2021 ONLINE 27TH AUGUST MORNING SHIFT
1 Qs
JEE MAIN 2021 ONLINE 27TH JULY EVENING SHIFT
1 Qs
JEE MAIN 2021 ONLINE 27TH JULY MORNING SHIFT
1 Qs
JEE MAIN 2020 ONLINE 6TH SEPTEMBER MORNING SLOT
2 Qs
JEE MAIN 2020 ONLINE 2ND SEPTEMBER MORNING SLOT
1 Qs
JEE MAIN 2020 ONLINE 4TH SEPTEMBER EVENING SLOT
1 Qs
JEE MAIN 2020 ONLINE 4TH SEPTEMBER MORNING SLOT
1 Qs
JEE MAIN 2020 ONLINE 5TH SEPTEMBER EVENING SLOT
1 Qs
JEE MAIN 2020 ONLINE 5TH SEPTEMBER MORNING SLOT
1 Qs
JEE MAIN 2020 ONLINE 6TH SEPTEMBER EVENING SLOT
1 Qs
JEE MAIN 2020 ONLINE 9TH JANUARY EVENING SLOT
1 Qs
JEE MAIN 2019 ONLINE 12TH APRIL EVENING SLOT
2 Qs
JEE MAIN 2019 ONLINE 12TH JANUARY MORNING SLOT
2 Qs
JEE MAIN 2019 ONLINE 10TH APRIL EVENING SLOT
1 Qs
JEE MAIN 2019 ONLINE 10TH JANUARY EVENING SLOT
1 Qs
JEE MAIN 2019 ONLINE 10TH JANUARY MORNING SLOT
1 Qs
JEE MAIN 2019 ONLINE 11TH JANUARY MORNING SLOT
1 Qs
JEE MAIN 2019 ONLINE 8TH APRIL EVENING SLOT
1 Qs
JEE MAIN 2019 ONLINE 9TH JANUARY EVENING SLOT
1 Qs
JEE MAIN 2018 ONLINE 15TH APRIL EVENING SLOT
1 Qs
JEE MAIN 2018 ONLINE 15TH APRIL MORNING SLOT
1 Qs
JEE MAIN 2018 ONLINE 16TH APRIL MORNING SLOT
1 Qs
JEE MAIN 2017 ONLINE 9TH APRIL MORNING SLOT
1 Qs
JEE MAIN 2016 OFFLINE
1 Qs
JEE MAIN 2016 ONLINE 10TH APRIL MORNING SLOT
1 Qs
JEE MAIN 2015 OFFLINE
1 Qs
JEE MAIN 2014 OFFLINE
1 Qs
AIEEE 2012
1 Qs
AIEEE 2011
1 Qs
AIEEE 2010
1 Qs
AIEEE 2008
2 Qs
AIEEE 2006
2 Qs
AIEEE 2005
3 Qs
AIEEE 2004
3 Qs
AIEEE 2003
2 Qs
AIEEE 2002
2 Qs

Included previous year papers

Newest papers appear first. Sort by year, question coverage or name.

PaperYear / sessionQuestions in this viewOpen
JEE Main 2026 (Online) 4th April Evening Shift20261View paper
JEE Main 2026 (Online) 4th April Morning Shift20261View paper
JEE Main 2026 (Online) 5th April Evening Shift20261View paper
JEE Main 2026 (Online) 5th April Morning Shift20261View paper
JEE Main 2026 (Online) 6th April Evening Shift20261View paper
JEE Main 2026 (Online) 6th April Morning Shift20261View paper
JEE Main 2026 (Online) 8th April Evening Shift20262View paper
JEE MAIN 2026 ONLINE 22ND JANUARY MORNING SHIFT20261View paper
JEE MAIN 2026 ONLINE 23RD JANUARY EVENING SHIFT20261View paper
JEE MAIN 2026 ONLINE 23RD JANUARY MORNING SHIFT20262View paper
JEE MAIN 2026 ONLINE 24TH JANUARY EVENING SHIFT20261View paper
JEE MAIN 2026 ONLINE 28TH JANUARY EVENING SHIFT20261View paper
JEE MAIN 2025 ONLINE 22ND JANUARY MORNING SHIFT20251View paper
JEE MAIN 2025 ONLINE 23RD JANUARY EVENING SHIFT20251View paper
JEE MAIN 2025 ONLINE 24TH JANUARY EVENING SHIFT20251View paper
JEE MAIN 2025 ONLINE 24TH JANUARY MORNING SHIFT20251View paper
JEE MAIN 2025 ONLINE 29TH JANUARY EVENING SHIFT20251View paper
JEE MAIN 2025 ONLINE 29TH JANUARY MORNING SHIFT20251View paper
JEE MAIN 2025 ONLINE 2ND APRIL EVENING SHIFT20251View paper
JEE MAIN 2025 ONLINE 2ND APRIL MORNING SHIFT20251View paper
JEE MAIN 2025 ONLINE 3RD APRIL MORNING SHIFT20252View paper
JEE MAIN 2025 ONLINE 8TH APRIL EVENING SHIFT20251View paper
JEE MAIN 2024 ONLINE 29TH JANUARY EVENING SHIFT20241View paper
JEE MAIN 2024 ONLINE 29TH JANUARY MORNING SHIFT20241View paper
JEE MAIN 2024 ONLINE 31ST JANUARY EVENING SHIFT20241View paper
JEE MAIN 2024 ONLINE 31ST JANUARY MORNING SHIFT20241View paper
JEE MAIN 2024 ONLINE 4TH APRIL EVENING SHIFT20241View paper
JEE MAIN 2024 ONLINE 5TH APRIL EVENING SHIFT20241View paper
JEE MAIN 2024 ONLINE 5TH APRIL MORNING SHIFT20241View paper
JEE MAIN 2024 ONLINE 6TH APRIL EVENING SHIFT20241View paper
JEE MAIN 2024 ONLINE 6TH APRIL MORNING SHIFT20241View paper
JEE MAIN 2024 ONLINE 8TH APRIL MORNING SHIFT20241View paper
JEE MAIN 2023 ONLINE 10TH APRIL EVENING SHIFT20231View paper
JEE MAIN 2023 ONLINE 10TH APRIL MORNING SHIFT20231View paper
JEE MAIN 2023 ONLINE 11TH APRIL EVENING SHIFT20231View paper
JEE MAIN 2023 ONLINE 11TH APRIL MORNING SHIFT20231View paper
JEE MAIN 2023 ONLINE 1ST FEBRUARY EVENING SHIFT20231View paper
JEE MAIN 2023 ONLINE 1ST FEBRUARY MORNING SHIFT20231View paper
JEE MAIN 2023 ONLINE 29TH JANUARY EVENING SHIFT20231View paper
JEE MAIN 2023 ONLINE 29TH JANUARY MORNING SHIFT20232View paper
JEE MAIN 2023 ONLINE 30TH JANUARY EVENING SHIFT20231View paper
JEE MAIN 2023 ONLINE 31ST JANUARY MORNING SHIFT20231View paper
JEE MAIN 2023 ONLINE 6TH APRIL EVENING SHIFT20231View paper
JEE MAIN 2023 ONLINE 6TH APRIL MORNING SHIFT20231View paper
JEE MAIN 2022 ONLINE 24TH JUNE EVENING SHIFT20221View paper
JEE MAIN 2022 ONLINE 24TH JUNE MORNING SHIFT20222View paper
JEE MAIN 2022 ONLINE 25TH JUNE MORNING SHIFT20221View paper
JEE MAIN 2022 ONLINE 26TH JULY MORNING SHIFT20221View paper
JEE MAIN 2022 ONLINE 26TH JUNE EVENING SHIFT20221View paper
JEE MAIN 2022 ONLINE 27TH JUNE MORNING SHIFT20221View paper
JEE MAIN 2022 ONLINE 28TH JULY EVENING SHIFT20221View paper
JEE MAIN 2022 ONLINE 29TH JUNE EVENING SHIFT20222View paper
JEE MAIN 2022 ONLINE 30TH JUNE MORNING SHIFT20221View paper
JEE Main 2021 (Online) 24th February Morning Shift20213View paper
JEE Main 2021 (Online) 26th February Morning Shift20211View paper
JEE MAIN 2021 ONLINE 16TH MARCH MORNING SHIFT20211View paper
JEE MAIN 2021 ONLINE 17TH MARCH EVENING SHIFT20211View paper
JEE MAIN 2021 ONLINE 17TH MARCH MORNING SHIFT20211View paper
JEE MAIN 2021 ONLINE 18TH MARCH EVENING SHIFT20211View paper
JEE MAIN 2021 ONLINE 20TH JULY MORNING SHIFT20211View paper
JEE MAIN 2021 ONLINE 22TH JULY EVENING SHIFT20211View paper
JEE MAIN 2021 ONLINE 25TH JULY EVENING SHIFT20211View paper
JEE MAIN 2021 ONLINE 25TH JULY MORNING SHIFT20211View paper
JEE MAIN 2021 ONLINE 26TH AUGUST EVENING SHIFT20212View paper
JEE MAIN 2021 ONLINE 26TH AUGUST MORNING SHIFT20211View paper
JEE MAIN 2021 ONLINE 27TH AUGUST EVENING SHIFT20211View paper
JEE MAIN 2021 ONLINE 27TH AUGUST MORNING SHIFT20211View paper
JEE MAIN 2021 ONLINE 27TH JULY EVENING SHIFT20211View paper
JEE MAIN 2021 ONLINE 27TH JULY MORNING SHIFT20211View paper
JEE MAIN 2020 ONLINE 2ND SEPTEMBER MORNING SLOT20201View paper
JEE MAIN 2020 ONLINE 4TH SEPTEMBER EVENING SLOT20201View paper
JEE MAIN 2020 ONLINE 4TH SEPTEMBER MORNING SLOT20201View paper
JEE MAIN 2020 ONLINE 5TH SEPTEMBER EVENING SLOT20201View paper
JEE MAIN 2020 ONLINE 5TH SEPTEMBER MORNING SLOT20201View paper
JEE MAIN 2020 ONLINE 6TH SEPTEMBER EVENING SLOT20201View paper
JEE MAIN 2020 ONLINE 6TH SEPTEMBER MORNING SLOT20202View paper
JEE MAIN 2020 ONLINE 9TH JANUARY EVENING SLOT20201View paper
JEE MAIN 2019 ONLINE 10TH APRIL EVENING SLOT20191View paper
JEE MAIN 2019 ONLINE 10TH JANUARY EVENING SLOT20191View paper
JEE MAIN 2019 ONLINE 10TH JANUARY MORNING SLOT20191View paper
JEE MAIN 2019 ONLINE 11TH JANUARY MORNING SLOT20191View paper
JEE MAIN 2019 ONLINE 12TH APRIL EVENING SLOT20192View paper
JEE MAIN 2019 ONLINE 12TH JANUARY MORNING SLOT20192View paper
JEE MAIN 2019 ONLINE 8TH APRIL EVENING SLOT20191View paper
JEE MAIN 2019 ONLINE 9TH JANUARY EVENING SLOT20191View paper
JEE MAIN 2018 ONLINE 15TH APRIL EVENING SLOT20181View paper
JEE MAIN 2018 ONLINE 15TH APRIL MORNING SLOT20181View paper
JEE MAIN 2018 ONLINE 16TH APRIL MORNING SLOT20181View paper
JEE MAIN 2017 ONLINE 9TH APRIL MORNING SLOT20171View paper
JEE MAIN 2016 OFFLINE20161View paper
JEE MAIN 2016 ONLINE 10TH APRIL MORNING SLOT20161View paper
JEE MAIN 2015 OFFLINE20151View paper
JEE MAIN 2014 OFFLINE20141View paper
AIEEE 201220121View paper
AIEEE 201120111View paper
AIEEE 201020101View paper
AIEEE 200820082View paper
AIEEE 200620062View paper
AIEEE 200520053View paper
AIEEE 200420043View paper
AIEEE 200320032View paper
AIEEE 200220022View paper

All Chemical Equilibrium previous year questions

Practice every matching question in batches of 20, with every available option.

1
2002 · Chemistry · Physical Chemistry · Chemical Equilibrium
AIEEE 2002
For the reaction CO (g) + (1/2) O2 (g) \(\leftrightharpoons\) CO2 (g), Kp/Kc is :
A
RT
B
(RT)-1
C
(RT)-1/2
D
(RT)1/2
Open complete paper
2
2002 · Chemistry · Physical Chemistry · Chemical Equilibrium
AIEEE 2002
Change in volume of the system does not alter which of the following equilibria?
A
N2(g) + O2(g) \(\leftrightharpoons\) 2NO (g)
B
PCl5(g) \(\leftrightharpoons\) PCl3 (g) + Cl2 (g)
C
N2(g) + 3H2(g) \(\leftrightharpoons\) 2NH3 (g)
D
SO2Cl2 (g) \(\leftrightharpoons\) SO2 (g) + Cl2 (g)
Open complete paper
3
2003 · Chemistry · Physical Chemistry · Chemical Equilibrium
AIEEE 2003
For the reaction equilibrium
N2O4 (g) \(\leftrightharpoons\) 2NO2 (g)
the concentrations of N2O4 and NO2 at equilibrium are 4.8 \(\times\) 10-2 and 1.2 \(\times\) 10-2 mol L-1 respectively. The value of Kc for the reaction is
A
3 \(\times\) 10-1 mol L-1
B
3 \(\times\) 10-3 mol L-1
C
3 \(\times\) 103 mol L-1
D
3.3 \(\times\) 102 mol L-1
Open complete paper
4
2003 · Chemistry · Physical Chemistry · Chemical Equilibrium
AIEEE 2003
Consider the reaction equilibrium
2 SO2 (g) + O2 (g) \(\leftrightharpoons\) 2 SO3 (g); \(\Delta H^o\) = -198 kJ
One the basis of Le Chatelier's principle, the condition favourable for the forward reaction is :
A
increasing temperature as well as pressure
B
lowering the temperature and increasing the pressure
C
any value of temperature and pressure
D
lowering temperature as well as pressure
Open complete paper
5
2004 · Chemistry · Physical Chemistry · Chemical Equilibrium
AIEEE 2004
For the reaction, CO(g) + Cl2(g) \(\leftrightharpoons\) COCl2(g) the \({{{K_p}} \over {{K_c}}}\) is equal to :
A
\(\sqrt {RT}\)
B
RT
C
1/RT
D
1.0
Open complete paper
6
2004 · Chemistry · Physical Chemistry · Chemical Equilibrium
AIEEE 2004
What is the equilibrium expression for the reaction
P4 (s) + 5O2 \(\leftrightharpoons\) P4O10 (s)?
A
Kc = [P4O10] / 5[P4] [O2]
B
Kc = 1/[O2]5
C
Kc = [P4O10] / [P4] [O2]5
D
Kc = [O2]5
Open complete paper
7
2004 · Chemistry · Physical Chemistry · Chemical Equilibrium
AIEEE 2004
The equilibrium constant for the reaction N2(g) + O2(g) \(\leftrightharpoons\) 2NO(g) at temperature T is 4 \(\times\) 10-4. The value of Kc for the reaction NO(g) \(\leftrightharpoons\) \(1 \over 2\)N2 (g) + \(1 \over 2\)O2 (g) at the same temperature is :
A
2.5 \(\times\) 102
B
4 \(\times\) 10-4
C
50
D
0.02
Open complete paper
8
2005 · Chemistry · Physical Chemistry · Chemical Equilibrium
AIEEE 2005
An amount of solid NH4HS is placed in a flask already containing ammonia gas at a certain temperature and 0.50 atm. Pressure. Ammonium hydrogen sulphide decomposes to yield NH3 and H2S gases in the flask. When the decomposition reaction reaches equilibrium, the total pressure in the flask rises to 0.84 atm. The equilibrium constant for NH4HS decomposition at this temperature is :
A
0.30
B
0.11
C
0.17
D
0.18
Open complete paper
9
2005 · Chemistry · Physical Chemistry · Chemical Equilibrium
AIEEE 2005
The exothermic formation of ClF3 is represented by the equation:
Cl2 (g) + 3F2 (g) \(\leftrightharpoons\) 2ClF3 (g); \(\Delta H\) = -329 kJ
Which of the following will increase the quantity of ClF3 in an equilibrium mixture of Cl2, F2 and ClF3?
A
Increasing the temperature
B
Removing Cl2
C
Increasing the volume of the container
D
Adding F2
Open complete paper
10
2005 · Chemistry · Physical Chemistry · Chemical Equilibrium
AIEEE 2005
For the reaction 2NO2 (g) \(\leftrightharpoons\) 2NO (g) + O2 (g), (Kc = 1.8 \(\times\) 10-6 at 184oC) (R = 0.0831 kJ/(mol. K))
When Kp and Kc are compared at 184oC , it is found that :
A
Kp is greater than Kc
B
Kp is less than Kc
C
Kp = Kc
D
Whether Kp is greater than, less than or equal to Kc depends upon the total gas pressure
Open complete paper
11
2006 · Chemistry · Physical Chemistry · Chemical Equilibrium
AIEEE 2006
Phosphorus pentachloride dissociates as follows, in a closed reaction vessel
PCl5 (g) \(\leftrightharpoons\) PCl3 (g) + Cl2 (g)
If total pressure at equilibrium of the reaction mixture is P and degree of dissociation of PCl5 is x, the partial pressure of PCl3 will be
A
\(\left( {{x \over {x + 1}}} \right)P\)
B
\(\left( {{2x \over {1 - x}}} \right)P\)
C
\(\left( {{x \over {x - 1}}} \right)P\)
D
\(\left( {{x \over {1 - x}}} \right)P\)
Open complete paper
12
2006 · Chemistry · Physical Chemistry · Chemical Equilibrium
AIEEE 2006
The equilibrium constant for the reaction
SO3 (g) \(\leftrightharpoons\) SO2 (g) + \(1 \over 2\) O2 (g)
is Kc = 4.9 \(\times\) 10–2. The value of Kc for the reaction
2SO2 (g) + O2 (g) \(\leftrightharpoons\) 2SO3 (g) will be :
A
416
B
9.8 \(\times\) 10-2
C
4.9 \(\times\) 10-2
D
2.40 \(\times\) 10-3
Open complete paper
13
2008 · Chemistry · Physical Chemistry · Chemical Equilibrium
AIEEE 2008
The equilibrium constants KP1 and KP2 for the reactions X \(\leftrightharpoons\) 2Y and Z \(\leftrightharpoons\) P + Q, respectively are in the ratio of 1 : 9. If the degree of dissociation of X and Z be equal then the ratio of total pressure at these equilibria is :
A
1 : 36
B
1 : 1
C
1 : 3
D
1 : 9
Open complete paper
14
2008 · Chemistry · Physical Chemistry · Chemical Equilibrium
AIEEE 2008
For the following three reactions a, b and c, equilibrium constants are given:
a. CO (g) + H2O (g) \(\leftrightharpoons\) CO2(g) + H2 (g) ; K1
b. CH4 (g) + H2O (g) \(\leftrightharpoons\) CO(g) + 3H2 (g) ; K2
c. CH4 (g) + 2H2O (g) \(\leftrightharpoons\) CO2(g) + 4H2 (g) ; K3
A
\({K_1}\sqrt {{K_2}} = {K_3}\)
B
K2K3 = K1
C
K3 = K1K2
D
K3.\(K_2^3\) = \(K_1^2\)
Open complete paper
15
2010 · Chemistry · Physical Chemistry · Chemical Equilibrium
AIEEE 2010
In aqueous solution the ionization constants for carbonic acid are
K1 = 4.2 x 10–7 and K2 = 4.8 x 10–11
Select the correct statement for a saturated 0.034 M solution of the carbonic acid.
A
The concentration of \(CO_3^{2−}\) is 0.034 M.
B
The concentration of \(CO_3^{2−}\) is greater than that of \(HCO_3^{−}\)
C
The concentration of H+ and \(HCO_3^−\) are approximately equal.
D
The concentration of H+ is double that of \(CO_3^−\).
Open complete paper
16
2011 · Chemistry · Physical Chemistry · Chemical Equilibrium
AIEEE 2011
A vessel at 1000 K contains CO2 with a pressure of 0.5 atm. Some of the CO2 is converted into CO on the addition of graphite. If the total pressure at equilibrium is 0.8 atm, the value of K is :
A
3 atm
B
0.3 atm
C
0.18 atm
D
1.8 atm
Open complete paper
17
2012 · Chemistry · Physical Chemistry · Chemical Equilibrium
AIEEE 2012
The equilibrium constant (KC) for the reaction N2(g) + O2(g) \(\to\) 2NO(g) at temperature T is 4 \(\times\) 10–4. The value of KC for the reaction, NO(g) \(\to\) 1/2N2(g) + 1/2O2(g) at the same temperature is :
A
0.02
B
2.5 \(\times\) 102
C
4 \(\times\) 10-4
D
50.0
Open complete paper
18
2014 · Chemistry · Physical Chemistry · Chemical Equilibrium
JEE MAIN 2014 OFFLINE
For the reaction SO2 (g) + \({1 \over 2} O_2(g) \leftrightharpoons\) SO3(g).
if KP = KC(RT)x where the symbols have usual meaning then the value of x is: (assuming ideality)
A
-1
B
-1/2
C
1/2
D
1
Open complete paper
19
2015 · Chemistry · Physical Chemistry · Chemical Equilibrium
JEE MAIN 2015 OFFLINE
The standard Gibbs energy change at 300 K for the reaction 2A \(\leftrightharpoons\) B + C is 2494.2 J. At a given time, the composition of the reaction mixture is [A] = 1/2, [B] = 2 and [C] = 1/2. The reaction proceeds in the: [R = 8.314 J/K/mol, e = 2.718]
A
reverse direction because Q > Kc
B
forward direction because Q < Kc
C
reverse direction because Q < Kc
D
forward direction because Q > Kc
Open complete paper
20
2016 · Chemistry · Physical Chemistry · Chemical Equilibrium
JEE MAIN 2016 OFFLINE
The equilibrium constant at 298 K for a reaction A + B \(\leftrightharpoons\) C + D is 100. If the initial concentration of all the four species were 1M each, then equilibrium concentration of D (in mol L–1) will be:
A
0.818
B
1.818
C
1.182
D
0.182
Open complete paper

Showing 20 of 122 questions