1 mole each of H_(2)(g) "and" I_(2)(g) are introduced in a 1L evacuated vessel at 523K and equilibriumH_(2)(g)+I_(2)(g)hArr2Hi(g) is established. The concentration of HI(g) at equilibrium:

1 mole each of H_(2)(g) "and" I_(2)(g) are introduced in a 1L evacuate

1.	1 mole each of H_(2)(g) "and" I_(2)(g) are introduced in a 1L evacuated vessel at 523K and equilibriumH_(2)(g)+I_(2)(g)hArr2Hi(g) is established. The concentration of HI(g) at equilibrium:
Answer» Changes on changing PRESSURE. Changes on changing temperature. Changes on changing volume of the vessel Is same even if only `2` mol of `HI(g)` were introduced in the vessel in the beginning. Is same even when a platinum gauze is introduced to catalyst the reaction. Solution :`H_(2)(g)+I_(2)(g)hArr2HI(g)` (A) For changing pressure volume has to be changed, THOUGH NUMBER of moles of `HI(g)` do not get changed but its concentration will get changed. (B) Temperature change will change `K_(P)` and hence concentration. (C) Volume change will change concentration, not the number of moles. (D) Same equilibrium will be attained from EITHER direction. Catalyst does not change equilibrium concentration.