Can equilibrium be achieved between water and its vapours in an open vessel? Explain your answer stating what happens eventually.

The graph shows the relation between potential energy and progress of reaction. Observe the graph and answer the questions. What happen to the amount of enzyme at completion of reaction?

A liquid is in equilibrium with its vapour in a sealed container at a fixed temperature. The volume of the container is suddenly increased. What happens when equilibrium is restored finally and what will be the final vapour pressure?

Mixing of acetone and chloroform occurs with reduction in volume and is exothermic process. What change will occurs in vapour pressure ? Explain your answer.

A liquid is in equilibrium with its vapour in a sealed container at a fixed temoperature. The volume of the container is suddenly increased. What is the initial effect of the change on vapour pressyre?

If mica of dielectric constant K s placed between the plates. What are its advantages? Explain action of mica in the case.

A dental doctor uses a mirror of focal length 8 cm. To see the teeth clearly what should be the maximum distance between the teeth and the mirror ? Justify your answer . Which type of mirror has been used by the doctor ?

The equilibrium constant can be expressed in terms of partial pressure as well as concentration. What is the relation between K_p and K_c for the reaction, N_2(g)+O_2(g) gives 2NO(g)?

What happens when lime is added to hard water? Explain.