Question

Match the type of equilibrium with typical examples:

List I	List II
A. Oxidation/Reduction Equilibrium (Kredox) --- III. MnO4- + 5Fe2+ + 8H+ ⇌ Mn2+ + 5Fe3+ + 4H2O B. Heterogeneous Equilibrium (Ksp) --- IV. BaSO4(s) ⇌ Ba2+ + SO4 2- C. Distribution Equilibrium (Kd) --- I. I2(aq) ⇌ I2(org) D. Dissociation of weak Acid (Ka) --- II. CH3COOH + H2O ⇌ H3O+ + CH3COO-	III. MnO4- + 5Fe2+ + 8H+ ⇌ Mn2+ + 5Fe3+ + 4H2O IV. BaSO4(s) ⇌ Ba2+ + SO4 2- I. I2(aq) ⇌ I2(org) II. CH3COOH + H2O ⇌ H3O+ + CH3COO-

• A. A-IV, B-III, C-I, D-II
• B. A-III, B-I, C-IV, D-II
• C. A-III, B-IV, C-II, D-I
• D. A-III, B-IV, C-I, D-II

Hint:

Identify reaction type: electron transfer $\rightarrow$ redox; solid dissolving $\rightarrow$ $K_{sp}$; two liquid phases $\rightarrow$ $K_d$; partial ionisation of acid $\rightarrow$ $K_a$.

Answer 1

The Correct Option is D