Equilibrium questions
1777 published questions with worked solutions.
- The equilibrium constant for H₂(g) + CO₂(g) ⇌ H₂O(g) + CO(g) is 1.80 at 1000°C. If 1.0 mole of H₂ and 1.0 mole of CO₂ are placed...
- For A + B ⇌ 3C at 25°C, a 3 litre vessel contains 1, 2, 4 mole of A, B, C respectively. If Kc = 10, the reaction will proceed in:
- For a hypothetical equilibrium 4A + 5B ⇌ 4x + 6y, Kc has the unit:
- For the gaseous phase reaction, 2NO ⇌ N₂ + O₂, ΔH° = −43.5 kcal, which statement is correct for N₂(g) + O₂(g) ⇌ 2NO(g)?
- The equilibrium PCl₅(g) ⇌ PCl₃(g) + Cl₂(g) shows that Kp is 24.63 times the value of Kc at a particular temperature T. Then T (in...
- CuSO₄·5H₂O(s) ⇌ CuSO₄·3H₂O(s) + 2H₂O(v), which is the correct representation?
- If in the reaction N₂O₄ ⇌ 2NO₂, α is the degree of dissociation of N₂O₄, the total number of moles at equilibrium is:
- For which reaction does the equilibrium constant depend on the units of concentration?
- At a given temperature the Kc for PCl₅(g) ⇌ PCl₃(g) + Cl₂(g) is 2.4×10⁻³. At the same temperature, the Kc for PCl₃(g) + Cl₂(g) ⇌...
- At a certain temperature, 2HI ⇌ H₂ + I₂, only 50% HI is dissociated at equilibrium. The equilibrium constant is:
- In a vessel containing SO₃, SO₂ and O₂ at equilibrium, some helium gas is introduced so that total pressure increases while...
- Kp₁, Kp₂ for X ⇌ Y+Z (1) and A ⇌ 2B (2) are in ratio 9:1. If degree of dissociation of X and A are equal, total pressure at...
- In the reaction C(s) + CO₂(g) ⇌ 2CO(g), the equilibrium pressure is 12 atm. If 50% of CO₂ reacts, Kp for the change is:
- For a reaction in equilibrium:
- If ΔG° for 2HI(g) ⇌ H₂(g) + I₂(g) at 25°C is 1.7 kJ, the equilibrium constant is:
- Favourable conditions for manufacture of ammonia by the reaction N₂ + 3H₂ ⇌ 2NH₃; ΔH = −21.9 kcal are:
- The equilibrium constant Br₂ ⇌ 2Br at 500 K and 700 K are 10⁻¹⁰ and 10⁻⁵ respectively. The reaction is:
- Sulphide ions in alkaline solution react with solid sulphur to form polyvalent sulphide ions. The equilibrium constants for...
- What would be the effect on addition of CaCO₃ on the equilibrium of CaCO₃(s) ⇌ CaO(s) + CO₂(g) in a closed container:
- If 0.1 mole of I₂ is introduced into 1.0 litre flask at 1000 K, at equilibrium (Kc=10⁻⁶) which one is correct?
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