$A$ catalyst added to a reaction mixture:

$A$ reversible reaction $H_2 + Cl_2 \rightleftharpoons 2HCl$ is carried out in a $1 \ L$ flask. If the same reaction is carried out in a $2 \ L$ flask,the equilibrium constant will be

Explain chemical equilibrium with an example of a chemical reaction.

Pure ammonia is placed in a vessel at a temperature where its dissociation constant $(\alpha)$ is appreciable. At equilibrium,

Mark the correct statement in a reversible reaction.

$A$ chemical reaction is at equilibrium when