15 JEE Main 2021 Chemical Equilibrium previous-year questions with verified answers and step-by-step solutions.
These are the JEE Main 2021 previous-year questions from the Chemical Equilibrium chapter of Chemistry. Each links to a full solution with a verified answer key. To see the whole chapter across all years, visit the Chemical Equilibrium chapter hub.
The stepwise formation of Cu NH 3 4 2 + is given below: Cu 2 + + NH 3 ⇌ K 1 Cu NH 3 2 + Cu NH 3 2 + + NH 3 ⇌…
Consider the reaction N 2 O 4 (   g ) ⇌ 2 NO 2 (   g ) The temperature at which K C = 20 . 4 and K P =…
For the reaction A g ⇌ B g at 495   K , Δ r G ° = - 9 . 478   kJ   mol - 1 If we start t…
The number of moles of NH 3 , that must be added to 2   L of 0 . 80 MAgNO 3 in order to reduce the concentration o…
The OH - concentration in a mixture of 5 . 0   mL of 0 . 0504   M   NH 4 Cl and 2   mL of 0 . 0210…
At 1990   K and 1   atm pressure, there are equal number of Cl 2 molecules and Cl atoms in the reaction mixtu…
The equilibrium constant for the reaction A ( s ) ⇌ M ( s ) + 1 2 O 2 (   g ) is K p = 4 . At equilibrium, t…
In the sulphur estimation, 0 . 471   g of an organic compound gave 1 . 44   g of barium sulfate. The percenta…
2 SO 2 (   g ) + O 2 (   g ) ⇌ 2 SO 3 (   g ) In an equilibrium mixture, the partial pressures are…
PCl 5 ⇌ PCl 3 + Cl 2         K c = 1 . 844 3 . 0 moles of PCl 5 is introduced in a 1 L closed…
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