Equilibrium questions
1777 published questions with worked solutions.
- On adding A to the reaction at equilibrium, AB(s)⇌A(g)+B(g), the new equilibrium concentration of A becomes double, equilibrium...
- When 20 g of CaCO₃ were put into 10 litre flask and heated to 800°C, 35% of CaCO₃ remained unreacted at equilibrium. Kp for...
- For the reaction, N₂+3H₂⇌2NH₃, after the addition of equal number of moles of N₂ and H₂, equilibrium state is formed. Which of...
- In the equilibrium, 2SO₂(g)+O₂(g)⇌2SO₃(g), the partial pressure of SO₂, O₂ and SO₃ are 0.662, 0.101 and 0.331 atm respectively....
- Van't Hoff's equation giving the effect of temperature on chemical equilibrium is represented as:
- The vapour density of undecomposed N₂O₄ is 46. When heated, vapour density decreases to 24.5 due to its dissociation to NO₂. The...
- The equilibrium constant for the reaction 2X(g)+Y(g)⇌2Z(g) is 2.25 litre mol⁻¹. What would be the concentration of Y at...
- For NH₄HS(s) ⇌ NH₃(g)+H₂S(g), the observed pressure for the reaction mixture at equilibrium is 1.12 atm at 106°C. The value of Kp...
- The formation of phosgene is represented as CO+Cl₂⇌COCl₂. The reaction is carried out in a 500 mL flask. At equilibrium 0.3 mole...
- A reversible reaction, H₂+Cl₂⇌2HCl is carried out in a one litre flask. If the same reaction is carried out in a two litre flask,...
- The volume of the reaction vessel containing an equilibrium mixture in the reaction, SO₂Cl₂(g)⇌SO₂(g)+Cl₂(g), is increased. When...
- If the concentration of OH⁻ ions in the reaction Fe(OH)₃(s)⇌Fe³⁺(aq)+3OH⁻(aq) is decreased by ¼ times, then equilibrium...
- Hydrogen and oxygen were heated together in a closed vessel. The equilibrium constant is found to decrease after 2000°C. Which is...
- At constant temperature in one litre vessel, when the reaction, 2SO₃(g)⇌2SO₂(g)+O₂(g) is at equilibrium, the SO₂ concentration is...
- Which equilibrium in gaseous phase would be unaffected by an increase in pressure?
- A gaseous phase reaction is allowed to attain equilibrium as A(g)⇌B(g)+C(g) at constant pressure P. The partial pressure of A at...
- The dissociation equilibrium of a gas AB₂ can be represented as 2AB₂(g)⇌2AB(g)+B₂(g). The degree of dissociation is 'x' and is...
- In Kp=Kc[RT]^Δn, Δn may have:
- For the heterogeneous equilibrium CaCO _3(s) CaO (s) + CO _2(g), which of the following expressions is correct?
- Le-Chatelier's principle is not applicable to:
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