Under what conditions , addition of insert gas affects the equilibrium position in case of the following equilibrium at constant temperature . Give a reason in support of your answer. (a) decomposition of `NO` to `N_(2) and O_(2)` (b) decomposition of `SO_(3)` (c) formation of `CH_(3)OH ` from `CO and H_(2)`

Under what conditions , addition of insert gas affects the equilibrium

1.	Under what conditions , addition of insert gas affects the equilibrium position in case of the following equilibrium at constant temperature . Give a reason in support of your answer. (a) decomposition of `NO` to `N_(2) and O_(2)` (b) decomposition of `SO_(3)` (c) formation of `CH_(3)OH ` from `CO and H_(2)`
Answer» `2NO hArrN_(2)+O_(2)` The above equilibirum is associated with no change in volume. Therefore additon of inert gas has no effect on the equilibrium under any condiontion. (b) `2SO_(3)hArr2SO_(2)+O_(2)` The above equilibrium is associated with increase in volume. Addition of an inert gas has no effect has no effect at constant volume. At constant pressure, addition of inert gas favours the forward reaction since increases in volume takes place. (c) `CO_((g))+2H_(2(g))hArrCH_(3)OH_((g))` The above equilibrium is associated with decreases in volume. Addtion of the inter gas favours back-ward reaction since increases in volume takes place.

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