JEE Chemical Equilibrium Quiz
Chapter-wise practice on equilibrium constants, the reaction quotient, Le Chatelier's principle, and acid-base and solubility equilibria.
Skill map
Levels in this jee chemical equilibrium quiz
Every question is generated fresh by AI and calibrated to your level - clear a level and the next one gets harder. Miss one and the AI tutor explains Chemical Equilibrium until it sticks, then aims a follow-up at the gap. Want to grind one level? Start the quiz and type that sub-topic as your own.
Exam focus
How Chemical Equilibrium is asked
A large chapter that effectively contains two: gaseous equilibrium and ionic equilibrium. Ionic equilibrium - pH, buffers and solubility product - typically supplies more questions than the gaseous half, so splitting your preparation evenly between them under-serves the part that is asked more.
Cheat sheet
Chemical Equilibrium formulas worth memorising
| Quantity | Formula |
|---|---|
| Equilibrium constant | Kc = [products]^coeff / [reactants]^coeff |
| Kp and Kc | Kp = Kc(RT)^Δn(g) |
| Direction of reaction | Q < K forward, Q > K reverse, Q = K equilibrium |
| pH | pH = −log[H⁺], pH + pOH = 14 at 25 °C |
| Henderson-Hasselbalch | pH = pKa + log([salt]/[acid]) |
| Solubility product | Ksp = [Aⁿ⁺]^x [Bᵐ⁻]^y |
| Ostwald dilution law | Ka = Cα²/(1 − α) |
Marks lost here
Common mistakes in Chemical Equilibrium
- Including pure solids and pure liquids in the equilibrium expression. Their concentrations are effectively constant and are folded into K, so they never appear - a frequent source of wrong expressions for heterogeneous equilibria.
- Believing a catalyst shifts the equilibrium position. It speeds both directions equally, so equilibrium arrives sooner at exactly the same composition.
- Applying a pressure change when Δn(g) is zero. If the number of gas moles is equal on both sides, changing the pressure does not shift the equilibrium at all.
- Confusing K with Q. K is the fixed value at equilibrium for a given temperature; Q is the same expression evaluated at current concentrations, and comparing them tells you which way the reaction will move.
- Assuming that adding water always dilutes a buffer's pH toward neutral. Buffer pH depends on the ratio of salt to acid, which dilution leaves unchanged - which is precisely what makes buffers useful.
Game rules
How a round works
- 01Spawn
Press play - the AI generates Chemical Equilibrium questions in seconds.
- 02Level up
Answer to earn XP and build a streak. Difficulty adapts to your accuracy and speed.
- 03Learn or lose
Every answer - right or wrong - gets an AI tutor explanation. Wrong answers respawn as follow-ups.
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Player's guide
JEE Chemical Equilibrium Quiz - FAQs
Does temperature change the equilibrium constant?
Yes - temperature is the only factor that alters K. Concentration, pressure and catalysts shift the position of equilibrium but leave K unchanged. For an exothermic reaction, raising the temperature lowers K.
Why does a buffer resist pH change?
It contains a weak acid and its conjugate base in comparable amounts, so added H⁺ is consumed by the base and added OH⁻ by the acid. The salt-to-acid ratio changes only slightly, and since pH depends on the logarithm of that ratio, the pH barely moves.
Is the jee chemical equilibrium quiz free?
Yes - completely free, with no sign-up required. Type a topic, press start, and the AI generates an adaptive Chemical Equilibrium quiz with an explanation for every answer.
Can teachers host this jee chemical equilibrium quiz live for a class?
Yes - create a free teacher account, host a live room on "Chemical Equilibrium", and students join with a 6-character code at quff.in/join. No student accounts needed.
From the blog
Chemical Equilibrium guides & reading
JEE Chemical Equilibrium: 30 Practice Questions Solved
Thirty solved Equilibrium questions across both halves of the chapter - gaseous and ionic - with the ionic half weighted as the exam weights it.
Exam PrepJEE Mole Concept: 30 Practice Questions with Solutions
Thirty solved Mole Concept questions. Weakness here does not cost you one chapter - it costs you marks scattered across all of Physical Chemistry.
Exam PrepJEE Electrochemistry: 30 Practice Questions with Solutions
Thirty solved Electrochemistry questions. The maths is procedural; keeping anode, cathode and sign conventions straight is the real work.
More exam prep quizzes
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Six adaptive Chemical Equilibrium questions. About two minutes. Climb the podium.