Equilibrium

JEE Main 2024 (Online) 31st January Evening ShiftMCQMedium📈 Topic in 14% papers+4−1

Ques. 1JEE Main 2024, 31 January (Evening Shift)

A(g) B(g) + C2(g) The correct relationship between KP, and equilibrium pressure P is

KP = 1/2P3/2(2+ )3/2
KP = 3/2P1/2(2+ )1/2(1- )
KP = 1/2P1/2(2+ )3/2
KP = 1/2P1/2(2+ )1/2

Answer

(2) KP = 3/2P1/2(2+ )1/2(1- )

Solution

Start with 1 mol A; at equilibrium: A = 1- , B = , C = 2

⇒ total moles = 1+ 2= 2+ 2

Partial pressure = mole fraction × P:

pA= 2(1- )P2+ , pB= 2 P2+ , pC= P2+

KP= pB pC1/2pA

= 1- ( P2+ )1/2

= 3/2P1/2(2+ )1/2(1- )

Answer: (2)

Keep practising — Equilibrium

Ques. 2JEE Main 2024, 30 January (Morning Shift)

The pH at which Mg(OH)2 [ Ksp = 1 10-11 ] begins to precipitate from a solution containing 0.10 M Mg2+ ions is .

Ques. 3JEE Main 2024, 30 January (Evening Shift)

The pH of an aqueous solution containing 1 M benzoic acid (pKa = 4.20) and 1 M sodium benzoate is 4.5. The volume of benzoic acid solution in 300 mL of this buffer solution is mL. (given : log 2 = 0.3)

Ques. 4JEE Main 2024, 29 January (Morning Shift)

For the reaction N2O4(g) 2NO2(g), Kp = 0.492 atm at 300 K. Kc for the reaction at same temperature is 10-2. (Given : R = 0.082 L atm mol-1 K-1)

Ques. 5JEE Main 2024, 29 January (Evening Shift)

The following concentrations were observed at 500 K for the formation of NH3 from N2 and H2. At equilibrium ; [N2] = 2 10-2 M, [H2] = 3 10-2 M and [NH3] = 1.5 10-2 M. Equilibrium constant for the reaction is .

Ques. 6JEE Main 2024, 27 January (Morning Shift)

Given below are two statements : In the light of the above statements, choose the most appropriate answer from the options given below :

Both Statement I and Statement II are correct
Statement I is correct but Statement II is incorrect
Both Statement I and Statement II are incorrect
Statement I is incorrect but Statement II is correct

All Equilibrium PYQs →

PDFDownload Equilibrium PYQs as PDF Free, with answer key and a QR code to every solution — print it or study offline⬇

All JEE Main Chemistry chapters

Physical ChemistrySome Basic Concepts of Chemistry Structure of Atom States of Matter Thermodynamics Equilibrium Redox Reactions Solid State Solutions Electrochemistry Chemical Kinetics

Inorganic ChemistryClassification of Elements and Periodicity in Properties Chemical Bonding and Molecular Structure s-Block Elements p-Block Elements (Group 13 & 14)Environmental Chemistry General Principles of Isolation of Elements p-Block Elements (Group 15–18)d- and f-Block Elements Coordination Compounds

Organic ChemistryOrganic Chemistry – Some Basic Principles and Techniques Isomerism Hydrocarbons Haloalkanes and Haloarenes Alcohols, Phenols and Ethers Aldehydes, Ketones and Carboxylic Acids Amines Biomolecules Principles Related to Practical Chemistry