The state of equilibrium represents a ..............

What is homogeneous equilibrium? Give examples.

For a reaction $H_2 + I_2 \rightleftharpoons 2HI$ at $721 \ K$,the value of equilibrium constant is $50$. If $0.5 \ mol$ each of $H_2$ and $I_2$ is added to the system,the value of equilibrium constant will be

$A$ liquid is in equilibrium with its vapour in a sealed container at a fixed temperature. The volume of the container is suddenly increased.
$(a)$ What is the initial effect of the change on vapour pressure?
$(b)$ How do rates of evaporation and condensation change initially?
$(c)$ What happens when equilibrium is restored finally and what will be the final vapour pressure?

Assertion : The equilibrium constant is fixed and a characteristic for any given chemical reaction at a specified temperature.
Reason : The composition of the final equilibrium mixture at a particular temperature depends upon the starting amount of reactants.

In a chemical reaction,equilibrium is established when: