Equilibrium Basics: JEE Questions & Solutions
22 previous-year JEE Chemistry questions on Equilibrium Basics, each with a worked step-by-step solution.
Previous-year questions
- 01
Consider the general reaction given below at 400 K: xA( g) yB( g). The values of Kp and Kc are studied under the same condition of…
MCQMediumJEE 2026 - 02
For the following gas phase equilibrium reaction at constant temperature, NH3(g) = 12 N2(g) + 32 H2(g) if the total pressure is 3 atm and…
NVAMediumJEE 2026 - 03
X2(g) + Y2(g) 2Z(g). Equilibrium moles of X2, Y2, Z are 3, 3, 9 mol (in 1 L). 10 mol of Z(g) is added. New equilibrium moles of Z(g) is.…
NVAMediumJEE 2026 - 04
Consider the following gaseous equilibrium in a closed container of volume V at temperature T: P2( g) + Q2( g) 2PQ( g) Initially, 2 moles…
MCQMediumJEE 2026 - 05
Observe the following equilibrium in a 1 L flask: A(g) <= B(g) At T( K), the equilibrium concentrations of A and B are 0.5 M and 0.375 M…
MCQEasyJEE 2026 - 06
A vessel at 1000 K contains CO2 with a pressure of 0.5 atm. Some of CO2 is converted into CO on addition of graphite. If total pressure at…
MCQMediumJEE 2025 - 07
Consider the reaction: X2Y( g) X2( g) + 12 Y2( g) The equation representing the correct relationship between the degree of dissociation x…
MCQMediumJEE 2025 - 08
37.8 g N2O5 was taken in a 1 L reaction vessel and allowed to undergo the following reaction at 500 K: 2N2O5(g) 2N2O4(g) + O2(g) The total…
NVAMediumJEE 2025 - 09
For the reaction, H2(g) + I2(g) 2HI(g) Attainment of equilibrium is predicted correctly by:
MCQEasyJEE 2025 - 10
At temperature T, compound AB2 dissociates as AB2 A + 12 B2, having degree of dissociation x (small compared to unity). The correct…
MCQMediumJEE 2025 - 11
Consider the following equilibrium, CO(g) + 2 H2 (g) CH3 OH(g) 0.1 mol of CO along with a catalyst is present in a 2 dm^3 flask maintained…
MCQMediumJEE 2025 - 12
Given below are two statements: Statement I: A catalyst cannot alter the equilibrium constant Kc of the reaction, temperature remaining…
MCQEasyJEE 2025 - 13
The equilibrium constant for decomposition of H2O (g) H2O(g) H2(g) + 12 O2(g) ( G^ = 92.34 kJ mol^-1) is 8.0 10^-3 at 2300 K and total…
NVAMediumJEE 2025 - 14
The equilibrium constant for the formation of NH₃ from N₂ and H₂, given [N₂] = 2 10^-2 M, [H₂] = 3 10^-2 M, [NH₃] = 1.5 10^-2 M at 500 K,…
MCQEasyJEE 2024 - 15
The equilibrium constant for the formation of NH3 from N2 and H2, given [ N2] = 2 10^-2 M, [ H2] = 3 10^-2 M, [ NH3] = 1.5 10^-2 M at 500…
MCQEasyJEE 2024 - 16
Water decomposes at 2300 K: 2 H2 O(g) 2 H2(g) + O2(g) The percent of water decomposing at 2300 K and 1 bar is (Nearest integer).…
NVAMediumJEE 2023 - 17
At 298 K: N2 + 3H2 2NH3, K1 = 4 10^5 N2 + O2 2NO, K2 = 1.6 10^12 H2 + 12O2 H2O, K3 = 1.0 10^13 Based on the above equilibria, the…
NVAMediumJEE 2023 - 18
For reaction: SO2(g) + 12 O2(g) SO3(g) Kp = 2 10^12 at 27^ C and 1 atm pressure. The Kc for the same reaction is (Nearest integer). Given:…
NVAEasyJEE 2023 - 19
(i) X (g) Y (g) + Z (g), Kp1 = 3 (ii) A (g) 2B (g), Kp2 = 1 If the degree of dissociation and initial concentration of both the reactants X…
NVAMediumJEE 2023 - 20
The number of correct statement(s) involving equilibria in physical form from the following is: (1) Equilibrium is possible only in a…
NVAEasyJEE 2023 - 21
A mixture of 1 mole of H2O and 1 mole of CO is taken in a 10 liter container and heated to 725 K. At equilibrium, 10 of water by mass…
MCQMediumJEE 2023 - 22
4.5 moles each of hydrogen and iodine is heated in a sealed ten litre vessel. At equilibrium, 3 moles of HI were found. The equilibrium…
NVAEasyJEE 2023
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