7.30. At 473 K, the equilibrium constant K_c for the decomposition of phosphorus pentachloride (PCl₅) is 8.3 x 10^-3. If decomposition proceeds as:
PCl₅ (g) ​⇌ PCl₃ (g) + Cl₂ (g) ΔrH^ϴ = 124.0 kJ mol^–1
(a) Write an expression for K_c for the reaction
(b) What is the value of K_c for the reverse reaction at the same temperature.
(c) What would be the effect on K_c if
(i) More of PCl₅is added (ii) pressure is increased (iii) the temperature is increased.  

pH for 0.01 M NaOH solution is

K_p for the given reaction is (36 × 10^–2atm^–1) Find out K_c (M^–1) (nearest integer).

(2NO₂ N₂O₄)

(R=0.0821 atm. L/mol. K)

(T = 300K)

A(g) ->B(g) + $\frac{1}{2}$ <!-- [if gte mso 9]><xml> </xml><![endif]-->C(g)

In the about reaction, the correct relation between K_p, a and equilibrium pressure (p) is

Which of the following equilibrium will shift in forward direction on applying pressure?

The ionization constant of HCN is 4.5 × 10^–10 at 298 K. Hydrolysis constant of sodium cyanide is