Q1. The equilibrium Cr₂O₇²⁻ ⇌ 2CrO₄²⁻ is shifted to the right in:

Q2. A weak acid HA has degree of dissociation x. The correct expression for (pH − pKₐ) is:

Q3. For SO₃(g) ⇌ SO₂(g) + ½O₂(g), Kc = 4.9×10⁻². The value of Kc for 2SO₂(g)+O₂(g) ⇌ 2SO₃(g) is:

Q4. Ksp of BaSO₄ is 1×10⁻¹⁰ at 298 K. Solubility of BaSO₄ in 0.1 M K₂SO₄ (×10⁻⁹ g L⁻¹) is:

Q5. Buffer solution contains 1M benzoic acid (pKa = 4.20) and sodium benzoate. If pH = 4.5, volume of benzoic acid in 300 mL solution is ___ mL.

Q6. At equilibrium PCl₅(g) ⇌ PCl₃(g)+Cl₂(g). Addition of inert gas at constant T & P causes:

Q7. pH of 0.01 M weak acid (Ka = 4×10⁻¹⁰) is 5. After dilution pH becomes 6. New concentration = x×10⁻⁴ M. Find x.

Q8. AB₂(g) ⇌ AB(g) + ½B₂(g). Expression of degree of dissociation x in terms of Kp and p is:

Q9. For SO₂(g)+½O₂(g) ⇌ SO₃(g), Kp = 2×10¹² at 27°C. Kc (×10¹³) is:

Q10. A(g) ⇌ 2B(g)+C(g). Initial pressure = 450 mmHg, final = 720 mmHg. Fraction of A decomposed = x×10⁻¹. Find x.