Chemical Equili...

The initial rate of hydrolysis of methyl acetate (1M) by a weak acid (HA, 1 M) is 1/100th of that of a strong acid (HX, 1 M) at 25^o C. The K_a HA is equal to

For the following three reactions I, II and III, equilibrium constants are given
I. CO (g) + H₂O ⇌ CO₂ (g) + H₂ (g), K₁
II. CH₄ (g) + H₂O (g) ⇌ CO (g) + 3H₂ (g), K₂
III. CH₄ (g) + 2H₂O (g) ⇌ CO₂ (g) + 4H₂ (g), K₃
Which of the following relations is correct ?

2.5 mL of 2/5 M weak monoacidic base (K_b =1 × 10^-12 at 25^oC) is titrated with 2/15 M HCl in water at 25^oC. The concentration of H⁺ at equivalence point is (K_w = 1 × 10^-14 at 25^o C )

Look at the following reactions carried out in closed vessels:
(i) PCl₅ → PCl₃ + Cl₂
(ii) N₂ + O₂ → 2NO
(iii) 2KClO₃ → 2KCl + 3O₂
(iV) Fe³⁺ + SCN^– → Fe(SCN)²⁺
Which one of them is irreversible ?

According to law of Mass Action, for the reaction 2A + B → Products

If Δn = (n_p – n_r) is the change in the number of moles of gaseous substances during a reaction, then equilibrium constants K_p and K_c are related as

The relation between K_p and K_c for the reaction

The ratio of K_p /K_c for the reaction:

For a homogeneous chemical reaction, K_p = k_c when