Reaction Quotient (Q) vs Equilibrium Constant (K)
Use the reaction quotient to predict the direction of a reaction and understand what the magnitude of K tells you about the position of equilibrium.
Why this shows up in the exam
Predicting reaction direction and interpreting K are common NEET/JEE tasks.
How NEET tests this
Practise it
These are real questions from past NEET papers that test this exact idea.
If the value of equilibrium constant for a particular reaction is 1.6 × 10¹², then at equilibrium the system will contain
Push further
More challenging1 harder question built from the past papers above — a step up in difficulty, with distractors designed so you can't get there by elimination. Written and checked by our reviewers, not from a real paper.
Consider the reversible reaction: N₂(g) + 3H₂(g) ⇌ 2NH₃(g). At a certain temperature, the equilibrium constant K_c for this reaction is 0.5 M⁻². If, at a particular instant, the concentrations are [N₂] = 1.0 M, [H₂] = 2.0 M, and [NH₃] = 1.0 M, in which direction will the reaction proceed to reach equilibrium?
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