1.When a reversible reaction has reached the state of equilibrium -

2. At a total pressure of 2 atmospheres, the number of moles of N₂ ,H₂ and NH₃ in a gaseous mixture are 1,3 and 2. The partial pressure of  NH₃ in atmospheres is

3. The value of equilibrium constant for a reaction depends on-   

4. For an exothermic reaction in which the number of moles of reactants are more than the number of moles of products. In order to displace the reaction in the reverse direction, what are the favourable conditions

5.For dissociation of PCl₅,mole fraction of Cl₂ at equilibrium is 0.3. The total pressure is 1.0 atmosphere. The partial pressure of PCl₃ at equilibrium is –       

6. 56g of nitrogen and 8 g hydrogen gas are heated in a closed vessel. At equilibrium 34 g of ammonia are present. The equilibrium number of moles of nitrogen, hydrogen and ammonia are respectively -

7. A vessel at 1000 K contains CO₂ with a pressure of 0.5 atm. Some of the  CO₂  is converted into CO on addition of graphite. Calculate the value if K, if total pressure at equilibrium is 0.8 atm.

8. The vapour density of N₂O₄ at a certain temperature is 30. The per cent dissociation of  N₂O₄ at this temperature is 

9. Equivalent amounts of H₂ and I₂ are heated in a closed till equilibrium is obtained. If 80 % of the hydrogen can be converted to HI, the Kc at this temperature is -  

10. Active mass is defined as -