Equilibrium

CLASS-XI

EQUILIBRIUM

M.M.17

1. Write conjugate acid and base of NH3.

[1]

2. Write expression for Kc for the reaction CaCO3 (s)

[1]

CaO(s) + CO2(g)

3.The aqueous solution of ferric chloride is acidic. Why? [1] 4.Discuss the effect of catalyst & addition of inert gas at constant pressure

fort the reaction [2]

2SO2 (g) + O2 (g)

2SO3

(g) 5. A sample of HI (g) is placed in a flask at a pressure of 0.2 atm .At

[2]

equilibrium, partial pressure of HI (g) is 0.04

atm. What is Kp for the

given equilibrium?

2HI (g)

H2 (g) + I2 (g)

6.Calculate the PH of following solutions assuming complete dissociation: (a)0.001M KOH

(b)0.005M H2SO4

[2]

7.The PH of human blood is 7.38. Calculate hydrogen ion concentration.[2] 8.Write short notes on -: [3] (i) common ion effect (ii) PH

(iii) Heterogeneous equilibrium 9.What do you mean by buffer solution? Explain its two types with suitable examples.

[3]