For the reaction at equilibrium , `2SO_(2) (g) + O_(2) (g) hArr 2SO_(3) (g) + Heat, `
indicate the direction in which the equilibrium will shift when the following changes are made :
(i) Temperature of the system is decreased
(ii) Total pressure is decreased
(iii) Volume of the container is increased (iv) A catalyst is added.

Consider the reaction : 2SO_2(g)+O_2(g) hArr 2SO_3(g) +189.4 kJ . Indicate the direction in which the equilibrium will shift when (i)temperature is increased (ii) volume is increased (iii) a catalyst is added (iv) pressure is decreased (v) concentration of SO_2 is increased (vi) helium gas is added at constant volume so that the total pressure is increased (vii) helium gas is added at constant pressure.

For the reversible reaction N_(2) (g) +3H_(2) (g) hArr 2NH_(3) (g) + " Heat" The equilibrium shifts in forward direction

Inert gas has been added to the following equilibrium system at constant volume SO_(2)(g)+1//2 O_(2)(g) hArr SO_(3)(g) To which direction will the equilibrium shift?